OPINION OF THE COURT
Appellant Jamar Campbell was convicted by a jury in 2001 of possession of crack cocaine with intent to deliver and possession of cocaine within three hundred feet of a park. He appealed his conviction to the Supreme Court of Delaware, which affirmed. After unsuccessfully seeking post-conviction relief in the Superior and Supreme Courts of Delaware, Campbell, acting
pro se,
filed this habeas proceeding under 28 U.S.C. § 2254 in the District Court. His petition and accompanying memorandum of law alleged ineffective assistance of counsel on a number of grounds and an assortment of six other violations of his federal constitutional rights.
1
The District Court concluded that
*175
all of Campbell’s claims other than his ineffective assistance of counsel claims were unreviewable because the Delaware Supremе Court had rejected them pursuant to Delaware Supreme Court Rule 8, which provided an independent and adequate state law ground supporting that Court’s judgment. Therefore, the Court reviewed those claims only for “cause and prejudice” or a “miscarriage of justice.”
See Coleman v. Thompson,
This Court granted Campbell’s application for a certificate of apрealability under 28 U.S.C. § 2253(c)(1) with respect to the following issues: “(1) is Delaware Supreme Court Rule 8 an independent and adequate state ground that precludes federal habeas review ... (2) did the District Court properly discern all of the ineffective assistance of counsel claims that Campbell presented to the state court, ... and (3) was the Delaware Supreme Court’s application of
Strickland v. Washington,
I. Delaware Supreme Court Rule 8
Delaware Supreme Court Rule 8 provides:
Only questions fairly presented to the trial court may be presented for review; provided, however, that when the interests of justice so require, the Court may consider and determine any question not so presented.
Del.Supr. Ct. R. 8.
On Campbell’s direct appeal, the Supreme Court of Delaware expressly invoked Rule 8 in the disposition of all of Campbell’s claims other than his ineffective assistance of counsel claims. After ruling that Campbell’s ineffective assistance claims would have to be pursued in a post-conviction relief proceeding, the Court turned to the first of the remaining six claims and ruled as follows:
We review this claim, as well as the rest of Campbell’s claims, for plain error, since he raises them for the first time in this appeal. SUPR. CT. R.8; Wainwright v. State,504 A.2d 1096 , *176 1100 (Del.1986). Plain error is error that is “so clearly prejudicial to substantial rights as to jeopardize the fairness and integrity of the trial process”. Id.
Campbell v. State,
As this ruling and the citation to Wainwright indicate, the “interest of justice exception” to Rule 8 has been interpreted in the context of criminal litigation to call for what the Delaware Supreme Court terms a “plain error” analysis. Wainwright explains this concept as follows:
Under the plain error standard of review, the error complained of must be so clearly prejudicial to substantial rights as to jeopardize the fairness and integrity of the trial process. Dutton v. State, Del.Supr.,452 A.2d 127 , 146 (1982). Furthermore, the doctrine of plain error is limited to material defects which are apparent on the face of the record; which are basic, serious and fundamental in their character, аnd which clearly deprive an accused of a substantial right or which clearly show manifest injustice.
Wainwright,
As the Delaware Supreme Court’s opinions in
Wainwright
and this case indicate, this “plain error” rule is a state law rule and is applied without reference to federal case law.
See Dutton v. State,
A federal habeas court may not address the merits of a proeedurally-defaulted claim if the state court opinion includes a plain statement indicating that the judgment rests on a state law ground that is both “independent” of the merits of the federal claim and an “adequate” support for the court’s decision.
Coleman v. Thompson,
[a] state rule provides an independent and adequate basis for precluding federal review of a claim if the “rule speaks in unmistakable terms[,] all state appellate courts refused to review the petitioner’s claim on the meritsf, and] the state courts’ refusal [was] consistent with other decisions,” that is, the procedural rule was “consistently and regularly applied.” Doctor v. Walters,96 F.3d 675 , 683-84 (3d Cir.1996).
Albrecht v. Horn,
*177 A. Independence
When, as here, a state court expressly relies on a state procedural rule of preclusion as a basis for its decision, the independence issue turns on whether the state law alone provides everything necessary to support the court’s judgment. Even when the state court decision rests on alternative holdings, one based on federal law and the other based on a state procedural rule of preclusion, for example, the court’s reliance on fedеral law does not deprive the state rule of its independence if the state rule is sufficient alone to support the judgment.
Caruso v. Zelinsky,
While the Delaware Supreme Court when applying Rule 8 in this context of criminal litigation must, of course, be cognizant of the nature of the alleged federal constitutional violation, federal law is not essential to support its judgment. The Court is applying state, not federal, law and it can apply that state law without resolving the merits of the federal constitutional issue. Delaware case law establishes that the issue of whether the alleged error in the context of this particular case was “apparent on the face of the record” and “so clearly prejudicial to substantial rights as to jeopardize the fairness and integrity of the trial process” are issues governed by Delaware law. And those issues may be resolved by assuming
ar-guendo
the merit of the federal claim. In these respects, the situation before us is much like that before the Court of Appeals for the Seventh Circuit in
Willis v. Aiken,
The Indiana postconviction appellate court addressed federal constitutional concerns in analyzing the appropriateness of the jury instruction. As we have just noted, however, it did so in the context of determining whether waiver of the issue through failure to object ought to be forgiven because the instruction constituted “fundamental error.” We must now determine whether, in this *178 procedural context, the Indiana appellate court’s judgment can be said to rest on an independent and adequate state law ground or whеther the determination of “no fundamental error” is so “interwoven,” Coleman,501 U.S. at 735 ,111 S.Ct. at 2557 , with the federal claim as to justify federal review without a demonstration of cause and prejudice.
Willis,
The Willis Court’s ensuing description of the case law dealing with the Indiana “fundamental error” doctrine is an accurate description of the Delaware “plain error” jurisprudence under Rule 8:
These cases demonstrate that the principle of fundamental error in Indiana law involves an assessment not only of the substantive rights at stake but also of their impact on the particular trial. While there have been occasions in which Indiana courts have looked to a federal court’s assessment of federal rights to “corroborate” its own assessment, see Winston v. State,165 Ind.App. 369 ,332 N.E.2d 229 , 233 (1975), there is no discernible pattern of dependency on federal court assessment of a particular error as “fundamental.” Rather, the term, as employed in the Indiana cases, appears to be a term of art employed on a fact-specific basis for the purpose of determining whether to excuse noncompliance with the requirement that a timely objection be made on the record.
Indiana mandates review on the merits of fundamental rights claims only when the denial of the right “gives rise to a question of fundamental error as defined by state law.” Gutierrez,922 F.2d at 1469 (emphasis supplied).
Willis,
Delaware’s “plain error” exception to Rule 8 is not unique. Many states have procedural default rules with similar “safety valves” for situations in which enforcing the procedural default would work a serious injustice.
Neal v. Gramley,
Thus, our case, like
Willis,
is one in which the applicable state law is not dependent on a federal law. It is unlike
Ake v. Oklahoma,
Rule 8, as applied by the Delaware Supreme Court in this case, was “independent” of federal law.
B. Adequacy
A state procedural rule is “adequate” to bar federal habeas review only if it is “firmly established and regularly followed” by the state courts at the time of the petitioner’s trial.
Ford v. Georgia,
Rule 8 and the case law interpreting it served clear notice on Campbell and his trial counsel in “unmistakable terms” that an issue not presented to the trial court would not be considered on appeal unless the alleged error was so prejudicial to substantial rights as to jeopardize the fairness and integrity of the trial process.
Wainwright v. Sykes,
In the final analysis, Campbell’s argument оn “adequacy” boils down to his insistence that a “discretionary procedural rule such as Rule 8 cannot be ‘adequate’ for purposes of procedural default.” Appellant’s Br. at 18. If accepted, this proposition that a state procedural rule is rendered
per se
inadequate merely because it allows for some exercise of discretion by state courts would all but vitiate the longstanding doctrine of procedural default in the federal habeas context. As we have earlier noted, numerous Courts of Appeals cases have sustained the validity of state procedural bar rules having “safety valves” which involve exercise of the same kind of discretion required by the “interest of justice” exception to Rule 8.
See also, e.g., Wedra v. Lefevre,
Campbell cites very little in support of his condemnation of discretion. He complains that “the Delaware Supreme Court frequently exercises its discretion under Rule 8 to review federal claims raised for the first time on appeal” but the cases he *182 cites, by his own acknowledgment, “pres-entad] fundamental constitutional problems” which the Delaware Supreme Court found to satisfy the “plain error” standard. Appellant’s Br. at 19. We do not agree that this happens “frequently,” but, in any event, the frequency of such findings is nоt material so long as the “plain error” rule is being regularly and consistently applied.
The only category of cases where Campbell purports to identify instances in which Rule 8 has been applied in an inconsistent manner to similar situations is ineffective assistance of counsel cases. He cites a number of cases for the proposition that the Delaware Supreme Court “often invokes Rule 8 to review claims of ineffective assistance of counsel for the first time on direct appeal” and then cites a number of cases for the proposition that it “also frequently exercises its discretion to
not
consider ineffective assistance of counsel cases for the first time on appeal.” Appellant’s Br. at 20-21 (emphasis in original). Given the variety of forms ineffective assistance of counsel claims may take and the infinite variety of circumstances in which they may have occurred, this alone hardly demonstrates that Rule 8 is inconsistently applied by the Supreme Court of Delaware in ineffective assistance of counsel cases. Moreover, frequently, when it decides not to consider ineffective assistance of counsel claims for the first time on appeal, the Delaware Supreme Court, as here, does not reach the Rule 8 issue, relying instead on a different and independent rule — such claims are generally best heard in the first instance in a post-conviction relief proceeding because the trial record will not be adequate for resolving the relevant issues, and because trial counsel, if continuing to pursue his representation on dirеct appeal, should not be required to argue his own ineffectiveness.
Campbell v. State,
We hold that Delaware Supreme Court Rule 8 as applied by the Delaware Supreme Court in Campbell’s case provides an independent and adequate state ground which forecloses federal habeas review as the District Court held.
II. Ineffective Assistance
A.
The state’s case against Campbell was straightforward. Two policе officers observed Campbell at 1:30 A.M. on December 16, 1999, standing with a woman on the sidewalk. He and the woman had their hands out towards one another and were looking down as they appeared to exchange something. The officers stopped their patrol car near Campbell and got out. As they did, Campbell began to walk away and threw an object into the street under a car. One of the officers retrieved the object almost immediately. It was a bag containing twenty-four smaller bags which held, in total, 2.45 grams of crack cocaine. Campbell was arrested.
The police officers testified at Campbell’s trial along with a senior forensic chemist and those having responsibility for the chain of custody of the drugs. Campbell was the sole witness for the defense. He denied selling drugs. He indicated *183 thаt he was on his way to visit his aunt and uncle but had some difficulty remembering his uncle’s name.
The Supreme Court of Delaware when reviewing the judgment of the Superior Court in the post-conviction relief proceeding described the ineffective assistance of counsel claims before it as follows:
[H]is trial counsel provided ineffective assistance by failing to conduct an adequate investigation, subpoena trial witnesses, make appropriate objections at trial, conduct a proper cross-examination of the State’s witnesses, move to suppress evidence, challenge the arrest warrant, object to improper jury instructions, and move for a mistrial.
Campbell v. State,
In order to prevail on his ineffeсtive assistance of counsel, Campbell must show that his counsel’s representation fell below an objective standard of reasonableness and that, but for counsel’s professional errors, there is a reasonable probability that the outcome of the proceedings would have been different. 5
Campbell’s claims of ineffective assistance of counsel are unavailing. Campbell has presented no evidence that any claimed error on the part of his counsel resulted in prejudice to him.
Id.
Campbell insists that this ruling was an unreasonable application of Strickland because the “Delaware Supreme Court essentially required Mr. Campbell, a pro se litigant, to produce ‘evidence’ of prejudice at the pleading stage without giving him an opportunity to present evidenсe of prejudice.” Appellant’s Br. at 34-35. We disagree.
While it is true that the Court employed the phrase “presented no evidence,” we decline to attribute to the Delaware Supreme Court an intent to fault Campbell for not having presented evidence to the Court when no hearing had been held. In context, — that is, in the context of a motion by the state to summarily “affirm the Superior Court’s judgment on the ground that it [was] manifest on the face of Campbell’s opening brief that the appeal was without merit,” App. at 45a,' — the Court clearly was ruling that Campbell had provided no reason to believe he could present a prima facie case of prejudice if the matter proceeded to a hearing. This was not an unreasonable application of
Strickland.
We approved a similar application of
Strickland in Wells v. Petsock,
When a district court has denied a petition for a writ of habeas corpus without an evidentiary hearing, we must remand for a hearing only if “the petitioner has alleged facts that, if proved, would entitle him to relief.” Zettlemoyer v. Fulcomer,923 F.2d 284 , 291 (3d.Cir.1991), petition for cert. filed (June 18, 1991). Thus, to merit a hearing, a claim for ineffective assistance of counsel, accepting the veracity of its allegations, must satisfy both prongs of the Strickland test, deficient counsel and prejudice to the defense. U.S. v. Daw *184 son,857 F.2d 923 , 928 (3d Cir.1988). Here, Wells’ allegation of ineffective assistance of counsel is impaled on the second prong of the Court’s analysis in Strickland.
Wells,
In order to establish the prejudice required by
Strickland,
the party сlaiming ineffective assistance “must show that there is a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.”
Strickland,
Campbell’s brief insists that the Delaware Supreme Court failed to accept his factual allegations regarding prejudice. He fails, however, to identify any such fact. The following segment of his brief before us is typical:
Accepting Mr. Campbell’s pro se pleadings and briefs as true, they demonstrate a reasonable probability that his counsel’s deficient performance affected the outcome of his case. Mr. Campbell argued that counsel wholly failed to investigate this case. Mr. Campbell argued that counsel failed to subpoena a potentially exonerating witness to determine, at a minimum, what she knew and who she was, and he wholly failed to investigate the evidence against his client.
Appellant’s Br. at 36. Campbell fails, however, to allege what this witness would have been able to say that would have been of help to him. As we have previously stressed, “a showing [of
Strickland
type prejudice] may not be based оn mere speculation about what the witnesses [counsel] failed to locate might have said.”
United States v. Gray,
This segment of Campbell’s brief sets forth only one other claim of “unreasonableness” on the part of the Delaware Supreme Court when it ruled that there was no reason to believe that Campbell had experienced Strickland prejudice from counsel’s error. Campbell insists that counsel should have prevented the admission of testimony regarding Campbell’s criminal history and that evidence of “prior criminal acts is highly prejudicial.” Appellant’s Br. at 36. Campbell does not explain, however, how this alleged error could have had a “reasonable probability” of affecting the outcome of the proceeding. So far as we are able to determine from the record, the jury received only the information that Campbell had been convicted of the felony of receiving stolen property in 1997 and an unspecified “second felony” in 1998. This information would appear to have been admissible under Delaware Rule of Evidence 609 as relevant only to the credibility of Campbell as a witness, and the trial judge so instructed at some length. 7 App. at 149a. *185 This information, accordingly, was appropriately before the jury. Moreover, given the limited information presented to the jury regarding the defendant’s record and the overwhelming evidence of his guilt, we cannot say the conclusion reached by the Delaware Supreme Court was an unreasonable application of Strickland.
Campbell has failed to show that the Delaware Supreme Court’s application of Strickland was unreasonable.
B.
Campbell’s federal habeas petition consisted of 102 handwritten pages. Since ineffective assistance of counsel claims based on different acts or omissions are discrete claims and must each be exhausted, the District Court began with the difficult task of gleaning from the petition twelve distinct ineffective assistance of counsel claims. Comparing these with the voluminous papers filed in the state post-conviction relief petition, the Court ruled that three of these claims had not been exhausted.
8
The District Court then concluded that Campbell had shown neither “cause and prejudice” nor “miscarriage of justice,”
see Coleman,
Campbell insists that he exhausted all of his claims. He accuses the District Court of mischaracterizing the three claims it held to be unexhausted. Campbell’s brief then states those claims as follows:
In his habeas petition and brief, Mr. Campbell argued that counsel was ineffective because (1) counsel failed to conduct discovery or investigate into whether the female at the scene was an informant, or a police officer, or offered immunity (R.188a, 195a, 205a); (2) he failed to request forensic testing of the bag containing cocaine found at the scene (R.188a, 195a); (3) counsel’s overall strategy was to raise reasonable doubt but he failed to pursue that strategy because he did not investigate into the female present at the scene or investigate the evidence against Mr. Campbell (R.206a).
Appellant’s Br. at 29. Campbell insists that each of these claims was not only presented to, but also decided by, the Delaware Supreme Court in the post-conviction relief proceeding. 9
Liberally construing and then comparing the voluminous pleadings in the state and federal proceedings in this case,
see Montgomery v. Brierley,
As we have indicated, the Supreme Court of Delaware held that Campbell’s petition and brief had provided no reason to believe that any of the alleged deficiencies in counsel’s performance had resulted in Striсkland-type prejudice to him. Accepting his factual allegations as true, the Court concluded that Campbell had failed to show a reasonable probability that, but for counsel’s professional errors, the outcome would have been different. The District Court was powerless to overturn such a conclusion unless it was able to say it represented an unreasonable application of Strickland. Given the state court record, it could not do so.
Campbell simply did not allege in the state court what information investigation of the female at the scene or forensic testing of the bag would have produced that would have been helpful to him. It necessarily follows that the District Court did not err in denying habeas relief.
III. Conclusion
The judgment of the District Court will be affirmed.
Notes
. The District Court summarized Campbell’s claims as follows:
(1) numerous allegations that defense counsel provided ineffective assistancе; (2) pros-ecutorial misconduct, stemming from the *175 prosecutor’s prejudicial remarks made throughout the trial; (3) the trial court erred by not curing the effect of the improper prosecutorial statements, by permitting suggestive and perjured testimony to occur, by asking Campbell improper and prejudicial questions, and by disclosing Campbell’s past record; (4) the State changed the elements of the charges in the indictment, causing a structural defect in the trial, and therefore violated his rights to due process and a fair trial; (5) the State did not prove the elements of the charged offenses beyond a reasonable doubt, and there was insufficient evidence to sustain his convictions; (6) the evidence at trial had been tampered with; and (7) the jury instructions were improper.
Campbell v. Carroll,
. We have not previously had occasion to resolve this issue. Contrary to Campbell's suggestion,
Reynolds v. Ellingsworth,
. Campbell insists that the Delaware Supreme Court "actually reviewed” the merits of his federal claims other than his ineffective assistance of counsel claims. If the Delaware Supreme Court had not made a plain statement that it "relied independently on a viоlation of a state procedure,” but rather had “based [its] decision on the merits of the claim,” the District Court would not have been barred from reaching those claims in the course of its habeas review.
Harris v. Reed,
. According to Westlaw, the Delaware Supreme Court cited Rule 8 in 224 cases prior to thе end of 2001. While we have not read all of these cases, we have studied all of the cases cited by the parties and a fair sampling of the remainder.
. Between 1973 and 1991, the Delaware Supreme Court on at least five occasions did address the merits of sufficiency of evidence issues not presented to the trial court without mentioning Rule 8. In 1992, however, the Court noted this aberration from its general practice and applied Rule 8 to bar review of a sufficiency of evidence issue in
Gordon v. State,
With the exception of the 1973-1991 insufficiency of evidences cases referenced in
Gordon,
we have been referred to, and have found, no case in which the failure to fairly present an issue to the trial court was ignored and the merits addressed without reference to Rule 8. In
Nelson v. State,
. The absence of an "interest of justice” analysis in these cases does not, of course, suggest that Rule 8 is anything other than "adequate.” In each, as in Campbell's case, the Rule was applied to preclude review. In none is there an indication that an interest of justice exception was being urged upon the Court.
.
Strickland v. Washington,
. The Court instructed:
The fact that the defendant had been convicted of a felony, if such be a fact, may be considered by you for only one purpose; namely, in judging his credibility.
The fact of such a conviction does not necessarily destroy or impair the defen *185 dant’s credibility, and it does not raise the suggestion that the defendant has testified falsely. It is simply one of the circumstances that you may take into consideration on weighing the testimony of such a witness.
Proof of a prior conviction on the part of the defendant must not and shall not be considered by you in determining the guilt or innocence of the defendant, but may only be considered in judging the defendant’s credibility.
App. at 149a.
. The District Court characterized these claims as follows:
[ (1) ] counsel failed to investigate whether the female involved in the alleged drug transaction was a police officer, a police informant, or whether she was promised immunity,
[ (2) ] counsel failed to verify crime scene evidence, and
[ (3) ] counsel failed to develop overall trial strategy.
Campbell v. Carroll,
. "On appeal from the denial of post-conviction relief, the Delaware Supreme Court ... reviewed Mr. Campbell’s ineffective-assistance claims.... As to each of Mr. Campbell’s ineffective-assistance claims, the court summarily concluded: ... 'Campbell has presented no evidence that any claimed error on the part of counsel resulted in prejudice to him.’ ” Appellant's Br. at 25-26.
