Kendall Robinson appeals from the district court’s 1 order denying his petition for a writ of habeas corpus under 28 U.S.C. § 2254. We affirm.
I.
On May 8, 1985, Robinson was being held in the Hughes County Jail in Pierre, South Dakota. Robinson and Jeff Graycek asked Deputy Sheriff Ronald Wilson for a mop and bucket because the shower in their cell had overflowed. Wilson brought the requested items to the inmates. He returned later and unlocked the cell door to retrieve the mop and bucket. As he reached into the cell; Robinson jumped from a table in the cell, grabbed the bars above the cell door, swung his body, and kicked Wilson in the face, injuring Wilson’s eye and breaking his nose. Robinson and Graycek exited the cell and locked Wilson in it. As Robinson and Gray-eek were leaving the jail, they grabbed Matron Anita Cass and locked her in a visitation booth.
Approximately a week later, Officer Bill Olson apprehended Robinson and his girlfriend, Paula Bartels, in Rapid City, South Dakota. Olson placed Robinson and Bartels in the Pennington County Jail. Robinson told Olson that he would make a statement if *828 no charges would be filed against Bartels. Olson accepted Robinson’s offer, and Robinson confessed that he and Graycek had lured Wilson into the cell and that he had kicked Wilson in the face and locked him in the cell.
The State of South Dakota (the “state”) filed a Part I information charging Robinson with escape and aggravated assault. Additionally, the state filed a Part II information charging Robinson with being a habitual offender, having been convicted of third-degree burglary on August 28, 1979, of escape on March 31,1981, and of third-degree burglary on March 31, 1981.
Robinson was arraigned on the Part I information; he pled not guilty and not guilty by reason of insanity. A jury found Robinson guilty but mentally ill on both counts. After receiving the jury’s verdict, the trial court arraigned Robinson on the Part II information. Robinson admitted that he had been convicted of the three charged prior felonies, and the court therefore found him guilty of being a habitual offender. As a result, the maximum sentence for his escape and aggravated assault convictions increased from ten years’ imprisonment for each offense to life imprisonment for each. The court sentenced Robinson to concurrent prison terms of twenty-two years on the aggravated assault conviction and five years on the escape conviction.
The South Dakota Supreme Court affirmed the escape and aggravated assault convictions,
State v. Robinson,
On January 15, 1990, the state again filed a Part I information charging Robinson with escape and aggravated assault and a Part II information charging him with being an habitual offender. On April 4 and 5, Robinson was retried on the Part I information before the same trial court that had presided at his initial trial. A jury found him guilty of both counts, this time without qualification.
Upon excusing the jury, the trial court stated that had the trial been Robinson’s first on the present charges, the court would have arraigned Robinson on the Part II information, secured his plea to the allegations, and set a trial date if he denied them. The court noted, however, that Robinson had already been arraigned on the Part II information, had admitted all three prior felony convictions, and had been sentenced accordingly. Robinson’s counsel argued that by setting aside the underlying convictions Judge Heck had also vacated the habitual offender enhancement and that therefore the state needed to prosecute the habitual offender charge. The trial court responded that:
Well, I’m going to cut through all the red tape and rule that the defendant is not entitled to be retried on the Part Two Information; that he has previously admitted the three prior felony convictions after he was convicted of the underlying felony; and that this Court, after appropriate inquiry, found that the admission was voluntary, that there was a factual basis for it, accepted that admission and found the defendant guilty as an habitual criminal.
Robinson’s counsel noted that he had previously made a motion to strike Robinson’s 1981 convictions from the Part II information on the ground that they were constitutionally invalid. Counsel asked the court if it was *829 going to rule on this motion. The court responded:
I’m not going to go back and try something again that the defendant has already admitted to and this Court has already found his admission to be voluntary, and so I’m going to treat that conviction as an habitual criminal as not having been affected by Judge Heck’s previous ruling.
The state then asked whether the court was taking judicial notice of the court files for the three prior felonies and the file in the present case. The court indicated that it had examined the files and had taken notice of them. The court sentenced Robinson to the same prison terms that it had imposed in 1985, with credit for time served. The South Dakota Supreme Court affirmed the convictions.
State v. Robinson,
Robinson then filed this federal habeas action. A magistrate judge 3 held an eviden-tiary hearing and recommended that Robinson’s petition be denied. The district court adopted the recommendation.
II.
A. Habitual Offender Enhancement
Robinson argues that Judge Heck’s order reversing his escape and aggravated assault convictions also reversed his habitual offender enhancement.
In Robinson’s 1991 appeal, the South Dakota Supreme Court rejected this argument, holding “that it was not error to leave [Robinson’s] Part II information undisturbed.”
Robinson,
At the trial on the habitual offender information the people must prove the three prior convictions and the identity of the defendant as the person who committed those offenses. The people sustained this burden of proof in the habitual offender proceeding following the original conviction of carrying a concealed weapon and defendant was properly convicted as an habitual offender, having committed three prior felonies. That conviction was never reversed. The factual determinations essential to support that conviction have never been set aside.
[TJherefore, all that is necessary to empower the court to sentence the defendant as a fourth felony offender after the reversal of the fourth felony conviction is that the defendant be convicted again of the fourth felony offense upon retrial.
Id.,
As the United States Supreme Court has repeatedly emphasized, “ ‘federal habeas corpus relief does not lie for errors of state law.’”
Estelle v. McGuire,
— U.S. -, -,
We do not believe that the South Dakota Supreme Court’s holding violates the Constitution. As Robinson points out, under the clean slate doctrine, when a defendant’s
*830
conviction is reversed for trial error, the conviction and sentence imposed pursuant to the conviction are nullified.
See, e.g., Bullington v. Missouri,
Robinson further argues that the trial court’s refusal at the 1990 proceedings to allow him to challenge the constitutional validity of his prior felony convictions violated his right to due process. Because Judge Heck’s order did not disturb the determination that Robinson was a habitual offender, the trial court had no obligation to permit Robinson to attack the validity of his earlier convictions.
4
Robinson should not now complain about the trial court’s decision, for he has had numerous opportunities to challenge the validity of his convictions. Robinson could have attacked his prior convictions in 1985; instead, he admitted the convictions. He could have challenged them in his initial direct appeal or in his initial state habeas petition, but did not do so. He did finally challenge his habitual offender enhancement in his second state habeas petition, but Judge Heck did not reach the issue. He attacked his habitual offender status in his 1991 direct appeal, but the South Dakota Supreme Court rejected his arguments.
Robinson,
Robinson argues that his habitual offender determination should be reversed because the state presented insufficient evidence to prove the validity of his prior convictions or, more precisely, the validity of his guilty pleas. In particular, Robinson contends that the state had to prove that he voluntarily and intelligently waived his
Boy-kin
rights at his guilty pleas,
Boykin v. Alabama,
Treating a defendant’s admission of his prior offenses as a guilty plea is constitutional so long as the admission was knowing and voluntary.
Cox,
B. Ineffective Assistance of Counsel Claim
Robinson argues that his 1990 trial counsel was ineffective for the following reasons: he failed to prepare adequately for trial; he failed to suppress Robinson’s confession; he failed to exclude evidence of other crimes and bad acts; and he failed to object during the prosecutor’s closing argument.
To establish an ineffective assistance claim, Robinson must show that his counsel’s performance was deficient and that the deficient performance prejudiced his defense.
Strickland v. Washington,
Even if we assume that defense counsel’s alleged failures constituted deficient performance, Robinson has not demonstrated that, but for his counsel’s alleged errors, there is a reasonable probability that the outcome of his trial would have been different. As the magistrate judge found, in light of the overwhelming evidence against Robinson, “it strains [one’s] credulity to conclude that the ... jury would have decided this case any differently” if Robinson’s counsel had done everything that Robinson now suggests.
C. Suppression Claim
Robinson next argues that his confession to Officer Olson should have been suppressed because it was involuntary, having been made, Robinson contends, to ensure that Robinson’s girlfriend, Paula Bartels, would not be charged with a crime. Coercive police activity is a necessary predicate to finding that a confession is not voluntary in the constitutional sense.
Colorado v. Connelly,
D.Speedy Trial Claim
Robinson argues that he was denied a speedy trial. On September 9, 1989, Judge Heck entered his order vacating Robinson’s convictions for escape and aggravated assault. On September 19, the state filed a motion for a certificate of probable cause. On November 13, Judge Heck issued the certificate. The next day, Robinson appeared before the trial court for a bail hearing. On December 19, the state informed Judge Heck that it had decided not to appeal his order. On January 2, 1990, the trial court appointed counsel to represent Robinson and set his arraignment for January 15. Robinson’s trial began on April 4, slightly less than seven months after Judge Heck had entered his order.
Under a South Dakota statute, criminal eases must be disposed of within 180 days from the date on which the defendant first appeared before a judicial officer on the complaint or indictment, unless good cause exists for a delay. S.D. Codified Laws Ann. § 23A-44-5.1. In Robinson’s 1991 appeal, the South Dakota Supreme Court held that the 180-day rule does not apply when a court reverses a conviction and the defendant is retried.
Robinson,
South Dakota’s interpretation of its speedy-trial statute has no bearing upon whether the state violated Robinson’s federal constitutional right to a timely trial.
Stewart v. Nix,
We do not believe that seven months is presumptively prejudicial, given the circumstances of this case.
Cf. Jenkins v. Purkett,
E. Other Crimes Evidence
Robinson argues that the trial court erred in admitting evidence of other crimes and bad acts. In particular, he contends that the court should have excluded evidence that at the time of his escape he was being held in the Hughes County Jail for violating parole and facing habitual offender charges; that he had previously been incarcerated in the Hughes County Jail; and that following his escape the police had been warned that he could be armed. On habeas review, we do not examine whether evidence was properly admitted under state law.
McGuire,
— U.S. at -,
We express our appreciation to appointed counsel for his zealous efforts on Robinson’s behalf.
The order denying the petition for writ of habeas corpus is affirmed.
Notes
. The Honorable Donald J. Porter, Senior United States District Judge for the District of South Dakota.
. Pursuant to section 22-5-10 of the South Dakota Codified Laws, which became effective on July 1, 1985, the trial court had instructed the jury that insanity was an affirmative defense that the defendant had to prove by clear and convincing evidence. Judge Heck found, however, that under the law in effect on the day Robinson escaped from jail, a defendant who pled not guilty by reason of insanity needed to produce only evidence sufficient to raise the question of insanity, with the burden then shifting to the state to prove sanity beyond a reasonable doubt.
. The Honorable Carlyle E. Richards, United States Magistrate Judge for the District of South Dakota.
. Robinson argues that the trial court acted improperly by allowing the state to supplement the record when the court would not allow him to challenge the validity of his prior convictions. The state did not supplement the record, however. The state merely asked the court if it was taking judicial notice of the court files for Robinson’s prior convictions and for this case. The court responded that it had taken judicial notice of those files. We find the trial court’s action neither improper nor unfairly prejudicial.
