Anthony Lee Cunningham appeals from the district court’s denial of his petition for a writ of habeas corpus. In 1982, Cunningham pleaded guilty in Colorado state court to first-degree sexual assault. He now argues that his plea was neither knowingly nor intelligently entered because he did not understand the length of incarceration to which he could be subjected. Cunningham mistakenly believed that he would serve only half of his sentence. He seeks specific performance of the plea'bargain as understood by the parties or, in the alternative, to withdraw his plea. For the reasоns given below, this court affirms the judgment'of the district court..
I. BACKGROUND
Cunningham was originally charged in the District Court, City and County of Denver, *1056 Colorado, with first-degree sexual assault and three other counts. He pleaded guilty to the sexual assault charge, a class-2 felony, on September 13, 1982. Colo.Rev.Stat. §• 18-3-402(3). The State subsequently dismissed the remaining counts. At the time .of his guilty plea, first-degree sexual assault carried a possible sentence of twelve to twenty four years incarceration. Id. § 18-1-105(l)(a)(I), (9)(e). The trial court 1 sentenced Cunningham to seventeen years.
Consistent with the plea agreement, however, the trial court stayed Cunningham’s sentence. Instead of incarceration under the Department of Corrections, the plea agreement provided that Cunningham, who was eighteen at the time of his plea, would enter a treatment program at the Closed Adolescent Treatment Center under the supervision of the Department of Youth Services. If Cunningham violated any of the rules of the treatment center, however, the trial court would lift the stay of his sentence and he would serve the balance of his sentence under the .supervision of the Department of Corrections.
As a result of Cunningham’s subsequent violation of the rules of the Closed Adоlescent Treatment Center, the trial court terminated his treatment on July 6, 1984. In accordance with the terms of the plea agreement, the trial court permanently lifted the stay of Cunningham’s seventeen-year prison sentence and ordered him transferred to the Department of Corrections.
At the time Cunningham committed his offense, Colorado generally sentenced persons under a determinate sentencing scheme.
See Thiret v. Kautzky,
One exception to mandatory parole, in the Parole Board’s pre-1989 view, was for persons sentenced pursuant to the indeterminate scheme of the Sex Offenders Act, §§ 16-13-201 to -216 of the Colorado Revised Statutes.
Thiret,
The Parole Board changed its interpretation of the exception to the mandatory parole provision in January 1989. Under this new interpretation, all individuals sentenced for any sex offense, as the Sex Offenders Act defines “sex offense,”
4
but not limited to those who were sentenced pursuant to that Act, were not subject to mandatory parole.
Thiret,
Soon after the Parole Board changed its interpretation of its authority under § 17-2-201(5)(a), Cunningham learned that mandatory parole would not apply to him. On August 2, 1989, he filed a motion in Colorado state court to vacate his plea. Cunningham argued he did not voluntarily аnd knowingly enter his guilty plea because he did not understand the consequences. In particular, Cunningham alleged he was advised by counsel that if he were sentenced to prison, his sentence would be subject to mandatory parole. Cunningham claimed to understand this to mean that he would be released from prison after serving only one-half of his sentence. He alleged that he was not advised that he would fall into an exception to mandatory parole because his conviction was for a sex offense.
The habeas court subsequently held a hearing and denied Cunningham’s motion to vacate his plea. At this hearing, the parties stipulated to certain pertinent facts: (1) Cunningham’s initial counsel advised his clients that they would only have to serve one-half of their sentences less earned time; (2) the district attorney who negotiated the plea also believed that the maximum time of incarceration would be one-half the sentence imposed; and (3) this half-time provision was not part of the plea offer. In addition, Cunningham’s attorney at the time of his guilty plea stated on the record and without objection that he understood mandatory parole to apply and that he advised Cunningham he would serve half his sentence if the stay were lifted.
Cunningham also testified at the hearing in the habeas court. He stated he was advised by counsel and understood that the maximum amount of time he could be incarcerated under the plea agreement was one-half the maximum penalty of twenty four years. He explained that this understanding was the only reason he pleaded guilty. Cunningham also testified that if he had known he would have to serve his entire sentence, he would not have pleaded guilty.
The habeas court deniеd Cunningham’s requested relief and ruled that his plea was voluntarily and intelligently made. The ha-beas court pointed to the many advisements by the trial court on the record to Cunningham that he could receive a twenty four-year sentence. Prior to taking his plea, the trial court specifically told Cunningham of the possible twenty four-year sentence at least five times., The trial court also warned Cunningham, prior to taking his plea, that it was considering a sentence of about sixteen years and that if he violated the rules of the treatment center, “[Y]ou are going to do 16 years at the penitentiary.” In addition, the trial court asked Cunningham whether he understood the possible sentence that could be imposed as a result of his plea; Cunningham responded, “Yes.”
Prior to taking Cunningham’s plea, the following colloquy took place:
THE COURT: ... Now, have there been any other promises made to you other than *1058 what I have just talked about here to get you to enter this plea?
THE DEFENDANT: No.
THE COURT: Has anybody at all told you that I would give you a certain sentence or treat you in a certain way other than what’s been said here?
THE DEFENDANT: No.
Despite this colloquy, the habeas cоurt found that Cunningham was' told by his attorneys that he would only have to serve one-half of his sentence plus one year of parole. Moreover, the habeas court acknowledged that it shared the understanding of the parties at the time of the plea as to the application of mandatory parole to Cunningham’s sentence.
Nevertheless, the habeas court also found that Cunningham did not rely on the advice that he would be released after serving half his sentence. It further found that he made his plea solely with the consideration that he would enter the treаtment program and avoid supervision by the Department of Corrections. ■ The habeas court based this finding on statements made during the plea colloquy. Prior to the plea, the trial court asked Cunningham the reason for the plea hearing and Cunningham responded, “I don’t know, so that I can go to the [Closed Adolescent Treatment Center].” Then the trial court explained to Cunningham the nature and elements of the crime to which he was pleading guilty and the right to.trial he was foregoing in order to ensure that Cunningham understood the effect of his guilty plea. Cunningham responded that he understood the explanations given to him by the trial court. ■ On these bases, the habeas court held that Cunningham’s guilty plea was voluntarily and knowingly made.
The.Colorado Court of Appeals affirmed the trial court’s ruling in an unpublished order. Relying on the reasoning of
Aue,
After having-exhausted his state remedies, Cunningham filed a petition for a writ of habeas corpus under 28 U.S.C. § 2254 in the United States District Court for the District of Colorado. The magistrate judge held a hearing and heard argument but appears not to have heard additional testimony from witnesses. The magistrate reviewed the records created in the trial and habeas courts and issued a Recommendation to deny the petition. Cunningham then timely filed objections to thе magistrate judge’s Recommendation. The district court reviewed the record before it but apparently did not receive additional evidence. It then adopted the magistrate judge’s findings in the Recommendation and dismissed the petition. Cunningham timely appealed the district court’s Order of Dismissal. We exercise jurisdiction pursuant to 28 U.S.C. § 2253.
In this appeal, Cunningham argues that the plea bargain was not fair because he was induced to plead guilty by his false understanding of the application of mandatory parole. Because he has served longer than what he understood to be the twelve-year maximum period of incarceration, he contends that fundamental fairness dictates specific performance of the sentencing term of the plea bargain, as understood by all the parties. As a result, he claims he should be released from the custody of the Colorado Department of Corrections. In the alternative, Cunningham argues that his guilty plea and conviction should be vacated. We address these claims seriatim.
II. SPECIFIC PERFORMANCE OF THE PLEA AGREEMENT
Whether government conduct has violated a plea agreement presents a question of law which we review
de novo. United States v. Robertson,
“Where the government obtains a guilty plea predicated in any significant degree on a promise or agreement with the prosecuting attorney, such promise must be fulfilled to maintain the integrity of the plea.”
United States v. Hand,
Cunningham maintains that he is entitled to specific performance of the terms of the plea bargain as understood by the parties. Cunningham refers, of course, to the application of mandatory parole to his sentence. In
Lustgarden v. Gunter,
Cunningham nevertheless argues that the understanding of the parties at the time of the plea should control the construction of the terms of the plea bargain. His claim fails because the application of mandatory parole to Cunningham’s sentence is neither an explicit nor an implicit part of the plea agreement. The undisputed fact is that mandatory parole was not a part of the plea offer; Cunningham does not now allege to the contrary. 5 Thus his argument does not concern the construction of the plea agreement.
Because there was no promise that wa,s impliedly part of the understanding of thе plea agreement and the plea agreement does not specify that mandatory parole would apply, the eases cited by Cunningham are inap-posite.
See, e.g., Santobello v. New York,
The understanding Cunningham argues should control concerns the length of the sentence he received, which is not part of the plea agreement. That all of the parties may have understood mandatory parole to apply at the time of the plea does not make this a part of the plea agreement. Cunningham can point to no promise of mandatory parole that existed outside of the formal, written agreement; nor can he show that the parties intended mandatory parole to be a part of the plea agreement. As this court held in
Lustgarden,
any statement by the petitioner’s attorney about the application of mandatory parole does not bind the court unless it is a part of the plea agreement.
III. CONSTITUTIONALITY OF THE GUILTY PLEA
Cunningham also argues that he did not knowingly and voluntarily enter his guilty plea because he was led to believe that mandatоry parole would be a part of the agreement. He asserts that the reason he accepted the plea was to take advantage of mandatory parole, which his counsel informed him would apply. Cunningham argues that because the agreement did not actually conform to his understanding and contain this term, he should be able to withdraw his plea.
Whether . a defendant entered a knowing and voluntary guilty plea presents a question of law which this court reviews
de novo. Marshall v. Lonberger,
On review, a federal court may set aside a state court guilty plea only for failure to satisfy due process.
Miles v. Dorsey,
Cunningham’s argument centers on his understanding of the parole terms resulting from his plea. He does not contend that his plea resulted from any form of coercion,- material misrepresentation by the prosecutor or the trial court, or an unfulfilled promise.
See, e.g., Laycock,
An attorney’s erroneous sentence estimate or prediction of parole does not render a plea unknowingly made.
Laycock,
Closer to the issue here, in
Lustgarden,
this court considered á due process challenge to the Colorado Parole Board’s 1989 reinterpretation of the applicatiоn of mandatory parole to sex offenders.
Laycock
establishes that a defendant’s understanding he will serve less than his full sentence does not alone render his guilty plea constitutionally infirm.
Cunningham urges this court to hold that two findings by the habeas court are not supported by the record: (1) he did not rely on his counsel’s statements that he would serve only one-half of his sentence; and (2) that he entered his plea solely to avoid incarceration under the Department of Corrections. Under
Laycock,
Cunningham’s claim cannot stand unless his misunderstanding about the length of his possible incarceration rеsulted from some promise made by his counsel, the prosecutor, or the trial court or some other impermissible action.
See Laycock,
Federal review of a state court’s factual findings is of limited scope.
Ball v. Ricketts,
Having closely reviewed the entire record, we conclude it supports the habeas court’s finding that Cunningham did not rely on the advice of his counsel concerning his length of confinement. Although the parties do not dispute that Cunningham’s attorneys informed him mandatory parole would apply to his sentence, Cunningham stated in open court during his plea colloquy that he was not relying on any promises or predictions of a possible sentence made to him prior to his plea. “Solemn declarations in open court carry a strong presumption of verity.”
Blackledge v. Allison,
Furthermore, the habeas court’s finding that. Cunningham pleaded guilty solely to enter the program at the treatment center in turn additionally-supports the conclusion that he pleaded without-reliance on the promise of mandatory parole. That finding corresponds precisely with Cunningham’s statement to the trial court during the plea colloquy. Moreover, Cunningham’s argument that he accepted the plea agreement because of the application of mandatory parole is dubious. It does not really address the finding that he accepted the plea solely to enter the treatment- program. The application of mandatory parole would have caused Cunningham’s plea to provide no benefit to him .over going to trial. In this context, the habeаs court’s finding that the promise of the treatment program motivated Cunningham to accept the plea explains his motivation because the treatment program did represent a benefit of the plea bargain.
Because the record supports the habeas court’s findings, we cannot conclude that Cunningham relied on his attorney’s statements at the time of the plea that he would receive mandatory parole.
Laycock
indicates the defendant’s guilty plea may be constitutionally suspect when the defendant’s attorney promised he would serve less than his actual sentence.
Laycock,
IV. CONCLUSION
Because the undisputed facts demonstrate that mandatory parole was not a part of the plea offer, Cunningham’s argument that the plea agreement should be construed to contain that tеrm is unavailing. Cunningham’s specific performance argument - thus fails. Moreover, the habeas court found that the trial court never told Cunningham that he would serve only one-half of his sentence. It farther found that Cunningham did not rely on any statements made to him by his counsel at the time of his plea that he would only serve one-half of his sentence. After a care *1063 ful review of the record, this court is left with the conviction that these findings are supported by the record. As a result, we cannot conclude that Cunningham’s attorneys misinformed him of any material consequences of his plea which caused him to accept the plea. Accordingly, this court holds that Cunningham entered his plea knowingly and intelligently. For these reasons, the district court’s dismissal of Cunningham’s petition for a writ of habeas corpus is AFFIRMED.
Notes
. The Colorado state court heard both Cunningham’s plea in 1982 and his subsequent habeas petition in 1989. For ease of reference, we will refer to the state court as the "trial court” in connection with Cunningham's plea and sentencing. We will refer to the state court as the “habeas court” in relation to Cunningham’s ha-beas proceedings.
. Under § 17 — 22.5—301(1) of the Colorado Revised Statutes, a person serving a sentence for a crime committed between July 1, 1979, and July 1, 1985, could earn a good time deduction equal to one day of credit against a sentence for each day served.
Price v. Mills,
.In 1988, the Colorado legislature amended the parole provisions of its criminal code to authorize increased discretion to the Parole Board to grant or deny parole.
See Thiret v. Kautzky,
. The Sex Offenders Act reads:
"Sex offense” means sexual assault, except misdemeanor sexual assault in the third degree, as set forth in part 4 of article 3 of title 18, C.R.S.; sexuál assault on a сhild, as defined in section 18-3-405, C.R.S.; aggravated incest, as defined in section 18-6-302, C.R.S.; and an attempt to commit any of the offenses mentioned in this subsection (5).
Colo.Rev.Stat. § 16-13-202(5).
. Although the parties do not dispute .that both the prosecutor and the trial court understood mandatory parole to apply to Cunningham's sentence at the time of his plea, Cunningham never alleges that either told him it would apply. In fact, one of the undisputed facts is the testimony of the prosecutor that mandatory parole was not part of the plea offer. The trial court never indicated on the record thаt Cunningham would only have to serve one-half of the sentence imposed. Indeed, in explaining the possibility of a sixteen-year sentence, the trial court told him he was "going to do 16 years at the penitentiary,” not half of that. The court repeatedly told Cunningham of the possibility of a twenty four-year sentence.
. Cunningham more strenuously challenges the factual findings of the federal district court and magistrate judge. It appears that these findings were made on the basis -of the state record and that neither the district court nor the magistrate took additional testimony from witnessеs. This court has held that findings by a district court and magistrate based merely upon their review of the state record are not fully entitled to the clearly erroneous standard of review.
Archuleta v. Kerby,
