OPINION
Antyane Robinson appeals the District Court’s denial of his petition for a writ of habeas corpus under 28 U.S.C. § 2254. Robinson received a death sentence after a jury convicted him of first degree murder and related charges. For the reasons that follow, we will affirm the judgment of the District Court.
I.
On March 13, 1997, following a jury trial in the Cumberland County Court of Common Pleas, Robinson was convicted of first degree murder of Rashawn Bass, attempted criminal homicide of Tara Hodge, and related offenses. The evidence at trial established that, on June 29, 1996, Robinson made an unannounced visit to Hodge, his ex-girlfriend, at her apartment. When Robinson discovered that Hodge’s new boyfriend, Bass, was taking a shower in the apartment, an argument ensued. Robinson told Hodge to make Bass leave the apartment, but Hodge refused and attempted to block Robinson from entering the bathroom. Robinson pulled a semiautomatic handgun out of his waistband and shot Hodge in the head, rendering her unconscious. Robinson then proceeded into the bathroom and shot Bass seven times, killing him. Hodge survived and called the police after she regained consciousness.
At trial, the prosecutor emphasized that Robinson was from the “big city,” and that he shot two people for “a perceived disrespect.”
See
Appendix (“App.”) 164. The
*321
prosecutor elicited testimony concerning Robinson’s attempts to purchase firearms years before the offense as well as Robinson’s possession of a gun, bulletproof vest, ammunition, and other military gear. The trial court also admitted evidence seized from Robinson’s home, including photographs of Robinson posing with guns.
See Commonwealth v. Robinson,
Now, there was an image projected here, and it’s that big city image.... Man, I got to carry a gun wherever I go. [Robinson’s] not the person in here that all my life I’ve been treated so badly. This is the image of a kind of person capable of forming specific intent to kill. This is a lifestyle. You look at that and you judge these acts carefully.[A] person that wants to project this kind of image, the kind of guy that has to drive into Cumberland County and have guns in his waistband and his home has to have a bullet proof vest, those are the kind of guys I submit to you that say I ain’t going to be disrespected, disrespect me and you’re going to have to pay.
App. 452-56.
During the penalty phase of Robinson’s trial, the prosecutor elicited testimony indicating that Robinson: was on probation at the time of the murder for a prior assault and battery and carrying a deadly weapon, App. 530; violated various conditions of his probation, App. 515; and was convicted for assaulting another woman, App. 518-19. The prosecutor also described to the jury the purpose of aggravating circumstances: “there are some crimes and the manner in which you do them that are more terrible than other ones, and we want to tell people, okay, do the first crime but for God sake then stop.” App. 537. Explaining the applicability of aggravating circumstances to Robinson’s case, the prosecutor stated: “[a]nd then while he is killing Rashawn [Bass] another person gets almost killed. .That’s a serious thing that we have to stop.... ” App. 543. In addition, he described the applicability of the “grave risk” aggravating circumstance, 42 Pa. Cons.Stat. § 9711(d)(7), to the jury as follows:
Here we’re trying to say, gees, ... if you’re going to kill somebody, don’t create a risk of killing someone else. Because in the course of this killing, and by your very verdicts you said, yeah, he killed Rashawn Bass and he had the specific intent to do that, and while he’s doing that, in the course of that killing, he also created grave risk of death to Tara Hodge, and you heard that testimony. The doctor said had that angle changed just a bit, that girl would be dead. You all heard about what a vital organ the head is, and that’s just a common sense thing. So if you’re going to create a grave risk of death, that puts you in that seat that we’re sitting in today.
App. 538.
Following closing arguments at the penalty phase, Robinson’s counsel moved for a jury instruction, pursuant to
Simmons v. South Carolina,
that Robinson would be ineligible for parole should he receive a life sentence rather than the death penalty.
See
Finally, the trial court gave the following jury charge, in pertinent part, regarding aggravating circumstances:
In this case, the aggravating circumstances that are being submitted to you for your consideration to determine whether the Commonwealth has proven them beyond a reasonable doubt are ... right out of the Pennsylvania statute .... One, in the commission of the criminal homicide defendant knowingly created a grave risk of death to Tara Hodge and in addition to Rashawn Bass who was the victim of the offense.
App. 560-61. Robinson’s counsel did not object to this instruction.
The jury found unanimously that two aggravating circumstances applied to Robinson: (1) knowingly creating a grave risk of death to another person in addition to the victim in the commission of a murder, 42 Pa. Cons.Stat. § 9711(d)(7); and (2) committing a murder while in the perpetration of a felony, id. § 9711(d)(6). The jury also found two mitigating circumstances: (1) Robinson’s youth, id. § 9711(e)(4); and (2) his future contributions to society, see id. § 9711(e)(8). After concluding that the aggravating circumstances outweighed the mitigating circumstances, see id. § 9711(c)(l)(iv), the jury returned a verdict of death. On April 1, 1997, the trial court formally imposed upon Robinson a death sentence for first degree murder and a consecutive term of impris.onment of six years and nine months to twenty years for aggravated assault.
The Pennsylvania Supreme Court affirmed Robinson’s conviction and sentence.
Robinson I,
Oh August 8, 2005, Robinson filed a counseled petition for a writ of habeas corpus under 28 U.S.C. § 2254 in the United States District Court for the Middle District of Pennsylvania. On January 19, 2006, he filed an amended petition. Robinson asserted eighteen grounds for relief, including the two that he argues in this appeal: (1) the state trial court violated his due process rights when it declined to give a Simmons instruction; and (2) there was insufficient evidence to support the jury’s finding of the “grave risk” aggravating circumstance, and the trial court improperly instructed the jury with regard to this aggravating circumstance.
On September 30, 2011, the District Court denied Robinson’s petition. The District Court found that: (1) “when considered in context, the prosecutor’s questioning and comments did not convey a message that Robinson posed a threat of future dangerousness if not sentenced to death,” and therefore a
Simmons
instruction was not required,
Robinson n Beard,
No. 1:05-CV-1603,
Robinson filed a notice of appeal on October 28, 2011. Thereafter, he filed a motion in this Court to expand the certificate of appealability under 28 U.S.C. § 2258(c)(1) to include seven more issues. We granted a certificate of appealability on the additional issue of “whether the state supreme court’s determination on direct appeal that the trial court did not err in declining to instruct the jury, pursuant to
Simmons v. South Carolina,
II.
The District Court had jurisdiction over Robinson’s habeas corpus petition pursuant to 28 U.S.C. § 2254, and we have appellate jurisdiction under 28 U.S.C. §§ 1291 and 2253. Because the District Court did not hold an evidentiary hearing and relied on the state court record, we exercise plenary review.,
See Lambert v. Blackwell,
Section 2254(d) of the Antiterrorism and Effective Death Penalty Act (“AEDPA”) provides, in pertinent part, that:
An application for a writ of habeas corpus on behalf of a person in custody pursuant to the judgment of a State court shall not be granted with respect to any claim that was adjudicated on the merits in State court proceedings unless the adjudication of the claim—
(1) resulted in a decision that was contrary to, or involved an unreasonable application of, clearly established Feder *324 al law, as determined by the Supreme Court of the United States....
“This is a difficult to meet and highly deferential standard for evaluating state-court rulings, which demands that state-court decisions be given the benefit of the doubt....”
Cullen v. Pinholster,
— U.S. -,
In order for § 2254(d)(1) to apply, the state court must have adjudicated a petitioner’s claim “on the merits.” A state court’s decision is an adjudication on the merits where it is “a decision finally resolving the parties’ claims, with res judi-cata effect, that is based on the substance of the claim advanced, rather than on a procedural, or other, ground.”
Simmons v. Beard,
In the present case, the District Court applied the deferential AEDPA standard to Robinson’s Simmons claim, but not to his claims regarding the “grave risk” aggravating circumstance. We review de novo the District Court’s legal conclusion as to whether AEDPA deference applies. Id. In considering whether § 2254(d)(1) applies, we review the “last reasoned decision” of the state courts on the petitioner’s claims. Id. at 231-32.
III.
Robinson contends that the state impliedly argued his future dangerousness during the guilt and penalty phases of his trial. Thus, Robinson argues, the trial court should have instructed the jury that “life imprisonment” under Pennsylvania law means “life imprisonment without parole.”
A.
Robinson relies primarily on
Simmons v. South Carolina
to support his argument. In
Simmons,
the defendant was convicted of capital murder for killing an elderly woman.
A plurality of the Supreme Court ruled that, under these circumstances, due process required the trial judge to inform the jury that the defendant would not have been eligible for parole if sentenced to life imprisonment. It held that, “where the defendant’s future dangerousness is at issue, and state law prohibits the defendant’s release on parole, due process requires that the sentencing jury be informed that the defendant is parole ineligible.”
Id.
at 156,
In her concurrence, Justice O’Connor phrased the dispositive question as whether “the prosecution argues that the defendant will pose a threat to society in the future.”
Id.
at 177,
Eight years later, the Supreme Court considered whether a
Simmons
instruction should have been given in
Kelly v. South Carolina,
*326
The Supreme Court held that the trial court should have provided a parole ineligibility instruction because the state “accentuated the clear implication of future dangerousness raised by the evidence.”
Id.
at 255,
The
Kelly
dissenters, including two of the Justices who joined Justice O’Connor’s concurring opinion in
Simmons,
argued that the Court had improperly extended the reach of
Simmons.
Justice Rehnquist, joined by Justice Kennedy, observed that “the test is no longer whether the State argues future dangerousness to society; the test is now whether evidence was introduced at trial that raises an ‘implication’ of future dangerousness to society.”
Id.
at 261,
B.
On direct appeal, the Pennsylvania Supreme Court rejected Robinson’s argument that the trial court erred in declining to give a
Simmons
instruction.
2
The court held that, “where the only references to the dangerousness of appellant relate to appellant’s past dangerousness a
Simmons
instruction is not necessary.”
Robinson I,
1.
Robinson asserts, under § 2254(d)(1), that the Pennsylvania Supreme Court unreasonably applied Simmons when it held that future dangerousness is never placed at issue by references to a defendant’s prior conduct and must be “expressly implicated” to trigger the need for a Simmons instruction.
Under § 2254(d)(1), our review is limited to deciding whether a state court decision is contrary to or an unreasonable application of Supreme Court precedent “as of the time of the relevant state-court decision.”
Williams v. Taylor,
529 U.S.
*327
362, 412,
Robinson argues that
Kelly
“did not create or apply any new rule of law, but simply applied the holding of
Simmons
to the specific facts before it.” Robinson Br. 34. Therefore, he suggests, we may consider
Kelly
in determining whether the state court’s application of
Simmons
was unreasonable. Our prior case law, however, forecloses this argument. As noted earlier, the Supreme Court decision in
Kelly
“arguably broadened the holding in
Simmons.” Rompilla,
2.
The fundamental takeaway from
Simmons
is that a jury cannot be presented with generalized arguments regarding the defendant’s future dangerousness while also being prevented from learning that the defendant will never be released on parole. While we recognize that the evidence in many, if
not
all, capital cases will tend to show that a defendant may be dangerous in the future,
Simmons
does not require a parole ineligibility instruction in every case. The state court’s view that a
Simmons
instruction is not necessary where the only references to a defendant’s dangerousness relate to his past conduct draws a reasonable limiting principle that is consistent with the concerns set forth by the Supreme Court.
Robinson I,
Furthermore, the state court’s conclusion that the defendant’s future dangerousness must be “expressly implicated” to trigger the need for a parole ineligibility instruction comports with Justice O’Con-nor’s formulation of the
Simmons
rule.
Unlike the prosecutor in Simmons, the prosecutor at Robinson’s trial made no explicit mention of Robinson’s ability to conform to society in the future. The prosecutor’s statements characterizing Robinson as a “dangerous big city hoodlum,” as well as the evidence regarding Robinson’s ownership of guns and his criminal past, conveyed Robinson’s specific intent to kill Bass and Hodge. See, e.g., *328 App. 452 (“This is the image of a kind of person capable of forming specific intent to kill.”). None of the prosecutor’s statements implied that the jury should elect to sentence Robinson to death as an act of self-protection. Moreover, the prosecutor’s comment regarding aggravating circumstances — “[t]hat’s a serious thing that we have to stop” — conveyed the deterrent purposes of aggravating factors in a general sense. App. 543.
We agree with the District Court that the Pennsylvania Supreme Court’s rejection of Robinson’s Simmons claim cannot be disturbed under the narrow standard of review prescribed by AEDPA, and therefore we will affirm the District Court with respect to this claim.
IV.
Robinson’s remaining two arguments relate to Pennsylvania’s “grave risk” aggravating circumstance. The Pennsylvania capital sentencing statute sets forth eighteen aggravating factors, including the following: “[i]n the commission of the offense, the defendant knowingly created a grave risk of death to another person in addition to the victim of the offense.” 42 Pa. Cons.Stat. § 9711(d)(7). The jury concluded unanimously that this aggravating circumstance applied to Robinson. Robinson argues that: (1) there was insufficient evidence to support the jury’s finding that the “grave risk” aggravating circumstance applied; and (2) the trial court failed to limit its jury instruction properly, rendering the aggravating circumstance vague and overbroad.
A.
Before considering Robinson’s substantive arguments, we must determine whether they are properly before this Court and, if so, which standard of review applies. It appears from Robinson’s briefs that he expects us to review his claims de novo.
AEDPA requires a petitioner in state custody to exhaust all remedies available in the state courts before a federal court can grant his or her habeas petition. 28 U.S.C. § 2254(b)(1)(A). In Pennsylvania, a habeas corpus petitioner exhausts a claim by raising it either on direct appeal or in a petition under the PCRA.
See Holloway v. Horn,
On direct appeal, Robinson did not raise any arguments pertaining to the “grave risk” aggravating circumstance. However, under 42 Pa. Cons.Stat. § 9711(h)(1), (3), the Pennsylvania Supreme Court must automatically review all death sentences and affirm a given death sentence “unless it determines that ... the evidence fails to support the finding of at least one aggravating circumstance.” In Robinson’s case, the court reviewed his death sentence and determined that “the evidence was sufficient to establish the aggravating factors found by the jury.”
Robinson I,
In his PCRA petition, Robinson expressly raised the arguments he now raises before this Court. The Pennsylvania Supreme Court determined, however, that Robinson had “offer[ed] nothing that was not already reviewed by this Court on direct appeal.”
Robinson II,
With regard to Robinson’s sufficiency of the evidence claim, we must decide whether the Pennsylvania Supreme Court’s automatic review on direct appeal satisfied AEDPA’s exhaustion requirements. In
Bronshtein v. Horn,
we rejected the argument that a claim could automatically be exhausted on direct appeal by virtue of the Pennsylvania Supreme Court’s mandatory appellate review in capital cases.
See
Since no state court adjudicated Robinson’s jury instruction claim, the deferential AEDPA standard is inapplicable.
See Taylor v. Horn,
B.
Robinson argues that there was insufficient evidence for the jury to find that the “grave risk” aggravating circumstance applied to his case, in violation of his rights under the Eighth Amendment of the United States Constitution. He contends that, although shooting Hodge put her in danger, it did so before—not during—the commission of Bass’s murder. He also suggests that the “grave risk” aggravating circumstance cannot apply in a situation where two victims are shot separately in different rooms.
The capital sentencing statute places upon the Commonwealth the burden of proving every element of an aggravating circumstance beyond a reasonable doubt. 42 Pa. Cons.Stat. § 9711 (c)(l)(iii). In considering whether the evidence supports a finding that the “grave risk” aggravating circumstance is applicable, the court reviews “the actor’s conduct to determine whether his conduct brought others into a life threatening situation.”
Commonwealth v. Thompson,
Robinson relies heavily on the Pennsylvania Supreme Court’s decision in
Commonwealth v. Stokes,
At the penalty phase of Stokes’s trial, the trial judge instructed the jury that for each count of murder, the killing of the two other victims would satisfy the “grave risk” aggravating circumstance. Id. at 713. The jury found two aggravating circumstances, including the “grave risk” aggravating circumstance, and no mitigating circumstances as to each of the three indictments. Id. at 712. The trial court imposed upon Stokes three consecutive sentences of death. Id. On direct appeal, the Pennsylvania Supreme Court reversed the jury’s finding, because the manner in which the trial court charged the jury with respect to the “grave risk” aggravating circumstance “precluded the jury from properly analyzing the applicability of that circumstance to the facts of this case.” Id. at 714. The court noted that the “grave risk” aggravating circumstance could have applied only to the murders committed in the refrigerator, while it was “completely inapplicable” to the murder committed at the front door of the restaurant. Id.
Robinson suggests that, under Stokes, the factfinder must conduct a formalistic spatial inquiry to determine whether the “grave risk” aggravating circumstance applies. But Stokes does not stand for that proposition. The Pennsylvania Supreme Court deemed the “grave risk” aggravating circumstance inapplicable to the murder committed at the front door not only because it occurred a significant distance away from where the other individuals were located, but also because the defendant closed the refrigerator door before moving to the front of the restaurant, minimizing the possibility of a ricochet bullet. Id. The court also made clear that the jury must conduct a fact-specific inquiry to determine whether the “grave risk” aggravating circumstance applies. Id.
Furthermore, Robinson’s reading of
Stokes
does not comport with the principles set forth in other Pennsylvania cases. Indeed, rather than focus merely on the physical proximity between the “other person” and the murder victim, Pennsylvania courts have looked more generally at whether there is a link between the risk of danger to the “other person” and the murder of the victim.
See Paolello,
Under this interpretation, reasonable jurors could have found that Robinson assaulted Hodge in the process of getting to Bass because Hodge attempted to block him. In addition, as Hodge lay unconscious in the adjoining bedroom just a few feet away, Robinson fired seven bullets at Bass, at least one of which passed through the bathroom wall and into the kitchen. Although no bullets passed into the bedroom, Hodge certainly could have been struck by a ricochet or pass-through bullet. The fact that she did not actually get shot again does not lessen the risk that she faced at the time.
Accordingly, we will affirm the District Court’s holding that the Pennsylvania Supreme Court was reasonable in deciding that there was sufficient evidence to support the jury’s finding of the “grave risk” aggravating circumstance.
C.
Robinson asserts, finally, that the “grave risk” aggravating circumstance is unconstitutionally overbroad and vague, and that the trial court erred when it did not provide guidance to the jury on how to apply this aggravating circumstance beyond the words of the statute.
5
He relies on
Gregg v. Georgia,
Claims of vagueness directed at aggravating circumstances are analyzed under the Eighth Amendment. An aggravating circumstance is constitutional if it both: (1) applies “only to a subclass of defendants convicted of murder”; and (2) is not unconstitutionally vague.
Tuilaepa v. California,
Pennsylvania’s “grave risk” aggravating circumstance is not overbroad on its face. The Supreme Court has routinely rejected vagueness challenges to aggravating circumstances, including the standard “grave risk” aggravating circumstance.
See, e.g., Proffitt v. Florida,
Moreover, the “grave risk” aggravating circumstance was not applied unconstitutionally in Robinson’s case. The trial court told the jury that the “grave risk” aggravating circumstance applied if “in the commission of the criminal homicide defendant knowingly created a grave risk of death to Tara Hodge and in addition to Rashawn Bass who was the victim of the offense.” App. 560-61. This language mirrors the statute almost exactly, and like the statute itself, gave the jury sufficient guidance as to how to apply the law. All of the words in the Pennsylvania statute have plain meanings that would be understandable to the average juror. Thus, Robinson cannot show — and indeed, he has provided no arguments to support — that there is a “reasonable likelihood” that the jury applied the instruction in an unconstitutional manner.
We agree with the District Court that the trial court did not err when it provided instructions to the jury on the “grave risk” aggravating circumstance. We will affirm the District Court’s holding with respect to this claim.
V.
For the reasons stated above, we will affirm the judgment of the District Court.
Notes
. On May 20, 2013, Robinson filed a brief in this Court raising issues not encompassed in the certificates of appealability. Robinson also asked us to expand the page and word limits for his brief and to expand the certificate of appealability. We denied Robinson's requests and ordered him to file a conforming brief, which he did on July 1, 2013. The appellees contend that this brief is also nonconforming, because it is 63 pages rather than 30, see Fed. R.App. P. 32(a)(7)(A), and it raises an issue (ineffective assistance of counsel relating to the "grave risk” aggravating factor) not encompassed in the certificates of appealability. See Appellees’ Supplemental Br. 2.
The appellees are correct that we cannot consider Robinson's ineffective assistance of counsel claim because neither this Court nor the District Court granted a certificate of ap-pealability on that issue. As for page length, Federal Rule of Appellate Procedure 32(a)(7)(A) provides: "[a] principal brief may not exceed 30 pages, or a reply brief 15 pages, unless it complies with Rule 32(a)(7)(B) and (C).” Rule 37(a)(7)(B)(i) provides that "[a] principal brief is acceptable if: it contains no more than 14,000 words.” Robinson's counsel submitted a certificate of compliance, pursuant to Rule 37(a)(7)(C), stating that the corrected brief contains 12,042 words. Thus, Robinson's brief conforms to the rules of this Court.
. Robinson also raised this argument in his PCRA petition. The Pennsylvania Supreme Court determined that the claim was previously litigated and declined to consider it on the merits.
Robinson II,
. At oral argument, Robinson's counsel stated that resort to
Kelly
is unnecessary for Robinson’s claim to succeed. In any event, even if we were to consider
Kelly,
that decision would not help Robinson. The prosecutor's statements were not comparable to those in
Kelly,
which clearly "invited [the jury] to infer 'that petitioner [was] a vicious predator who would pose a continuing threat to the community."’
Kelly,
. The District Court declined to apply AED-PA’s exhaustion and procedural default requirements and reviewed this claim de novo, because the Commonwealth "deigned to provide the Court with only six sentences addressing [these claims]” and "neither addressed] these questions, nor provided] the Court with any citation to either the law or the record.”
Robinson,
. We note that Robinson’s brief devotes only one paragraph to this argument.
. Indeed, even though the Court in
Gregg
pointed out the potential vagueness issue with a similar "grave risk” aggravating factor, it
*332
ultimately upheld the statute as constitutional.
See Gregg,
