delivered the Opinion of the Court.
¶1 Elvis Lone Elk appeals from the District Court’s denial of his motion to withdraw his guilty plea. We affirm.
BACKGROUND
¶2 One night after eleven o’clock, Lone Elk went to the trailer of H.T. (Victim) looking for a woman named Jolene. It was November, and he was cold. Victim let him in and made him coffee. Lone Elk had no place to stay, so Victim made him a bed on the floor. He asked to hug her to say thank you. When Victim came close, Lone Elk grabbed her and took her into the bedroom. Three times, Victim tried to dial 911. The first two times, Lone Elk stopped her and the third time, he broke the phone. Victim screamed for help.
¶3 A neighbor in the trailer park knew Victim lived alone. He heard a frightened, panicked voice and muffled screams, so he ran to the nearest phone to call 911. Meanwhile, Lone Elk was forcing Victim to have vaginal intercourse. In a ploy to escape, Victim told Lone Elk she wanted a cigarette from the kitchen. By this time, the police had arrived. From outside the trailer, a police officer heard a woman ask for a cigarette and a man tell the woman that he did not want her screaming for help again. Seconds later, the door to the trailer burst open to reveal Victim running naked from the trailer. On her heels ran Lone Elk, naked also.
¶4 Lone Elk pleaded not guilty to sexual intercourse without consent, a crime with a maximum sentence of 100 years. Section 45-5-503(2), MCA (2001). He later decided to accept a plea bargain. Under the terms of the plea bargain, Lone Elk would plead guilty to burglary, and the prosecution would recommend a sentence of twenty years with five suspended. Lone Elk’s attorney was free to argue for a lesser sentence. On September 18, 2002, Lone Elk signed an Acknowledgment of *216 Waiver of Rights by Plea of Guilty that stated, “On November 7[,] 2001, I remained unlawfully in [Victim’s] home with the intent to commit a sexual assault in Yellowstone County.” The District Court made the following inquiries during the change of plea colloquy:
The Court: Mr. Lone Elk, I’ll ask you then how you plead to the charge in the Amended Information of burglary, felony, alleged to have occurred in Yellowstone County, Montana, on or about November 7th through 8th, 2001?
Mr. Lone Elk: Guilty.
The Court: Do you also understand that, in my opinion, given the charge that you are pleading guilty to, that you could be required to complete sex offender treatment?
Mr. Lone Elk: No.
Ms. Anderson [Lone Elk’s attorney, Kathy Anderson]: Judge, actually, we had not advised Mr. Lone Elk of that possibility. The Court: Right. I’m advising him of it now.
Ms. Anderson: Okay.
The Court: Are you suffering any mental or emotional disability that would prevent you from understanding what you’re doing today?
Mr. Lone Elk: No.
The Court: Are you under the influence of drugs, alcohol or prescription medication?
Mr. Lone Elk: No.
The Court: Tell me what it is that you did that makes you plead guilty to the burglary charge?
Ms. Anderson: Judge, if I might have just a second with my client.
(Whereupon, an off-the-record discussion took place between Ms. Anderson and Mr. Lone Elk. [Anderson later testified that, during this discussion, she told Lone Elk that she believed the judge could not require sexual offender treatment for burglary despite that the underlying felony was intent to commit sexual assault.])
Mr. Lone Elk: On November 7th, 2001,1 remained unlawfully in [Victim’s] home with the intent to commit assault in Yellowstone County.
The Court: What kind of assault did you intend to commit?
Mr. Lone Elk: Sexual assault.
The Court: And do you admit that you did in fact intend to commit a sexual assault on [Victim]?
*217 Mr. Lone Elk: Yes.
The Court: And you understand what the requirements or elements of sexual assault are?
Mr. Lone Elk: Yeah.
Ms. Anderson: Do you understand that sexual assault is sexual contact of another without that person’s consent?
Mr. Lone Elk: Yeah.
The Court: So you agree, now understanding the elements of sexual assault, that you intended to commit a sexual assault on [Victim]; is that what you’re telling me?
Mr. Lone Elk: Yeah.
The Court: .... And no one has threatened you or made any promises to get you to enter into this plea of guilty to the burglary charge, correct?
Mr. Lone Elk: (Nods head.)
The Court: Is that correct?
Mr. Lone Elk: Correct.
The Court: Very well. The Court will accept your plea as being knowingly and voluntarily made. I will set this matter for sentencing, and I do wish to have a sex offender evaluation completed.
¶5 Immediately after the hearing, Lone Elk asked Anderson if he could withdraw his plea.
¶6 Lone Elk had been taking Zoloft for four weeks preceding his plea of guilty. George Sheckelton, M.D., testified that the side-effects of Zoloft include agitation, insomnia, and decreased libido. He further testified that lack of concentration is not a side-effect to taking Zoloft.
¶7 Lone Elk raises two issues:
¶8 1. Did the District Court err in not allowing Lone Elk to withdraw his guilty plea which was entered out of fear of going to trial?
¶9 2. Did the District Court err in not allowing Lone Elk to withdraw his guilty plea that he entered while he was under the influence of anti-depressant medication?
STANDARD OF REVIEW
¶10 Although we have historically reviewed a district court’s denial of a defendant’s motion to withdraw a guilty plea to determine whether the district court abused its discretion,
State v. Martin,
DISCUSSION
I. Good Cause: The Huttinger Test
¶11 “At any time before or after judgment, the court may, for good cause shown, permit the plea of guilty or nolo contendere to be withdrawn and a plea of not guilty substituted.” Section 46-16-105(2), MCA (2001). Historically, this Court has balanced three factors in determining whether “good cause” under § 46-16-105(2), MCA, exists to permit withdrawal of a plea: (1) whether the district court adequately interrogated the defendant to determine his understanding of his plea; (2) whether the defendant promptly filed his motion to withdraw the prior plea; and (3) whether the defendant’s plea was the result of a plea bargain in which the prosecutor dismissed another charge. Martin, ¶ 13.
¶12 This Court created its current good cause test in
State v. Huttinger
(1979),
¶13 The United States Supreme Court acknowledges that “[a] plea of guilty is constitutionally valid only to the extent it is ‘voluntary’ and ‘intelligent.’ ”
Bousley v. United States
(1998),
¶14 The ultimate test for withdrawal of a plea is voluntariness. Although the three-part Huttinger test has two factors that bear on voluntariness, it neither lists all the factors, nor are all the factors it lists necessary. Whether a district court adequately interrogated the defendant to determine whether the defendant understood his plea bears on voluntariness because it tends to show that he had all the information necessary to make an informed decision.
¶15 Whether the defendant promptly filed his motion to withdraw the prior plea does not, however, bear on voluntariness. For example, the passage of fifteen years will neither make an involuntary plea more voluntary nor a voluntary plea more involuntary.
But see State v. Haynie
(1980),
¶16 Whether the defendant’s plea was the result of a plea bargain in which the prosecutor exchanged the plea for dismissal of another charge bears on voluntariness because it tends to show the defendant made an intelligent and calculated decision. This factor, however, is not dispositive. Over time, this Court has, in practice, equated good cause under § 46-16-105, MCA, with the constitutional test of voluntariness.
See Miller,
A. Legislative History
¶17 The ambiguity inherent in the phrase “good cause” makes a review of the legislative history of this statute appropriate in determining the scope of the phrase. In 1967, the Legislature gave district courts permission to allow a defendant to withdraw his guilty plea for “good cause.” Act Approved Feb. 28,1967, ch. 196,1967 Mont. Laws 353, 412 (codified at § 46-15-105(2), MCA (2001)). Good cause must include the constitutional requirements such as voluntariness, for it cannot exclude them, but the dearth of legislative history and the broad wording implies that good cause could include more than the minimal constitutional requirements. See Minutes of S. Jud. Comm. 40th Leg. (Mont. 1967); Minutes of H. Jud. Comm. 40th Leg. (Mont. *220 1967).
¶18 We presume in 1967 the Legislature was aware of the constitutional requirement that pleas must be voluntary.
Ross v. City of Great Falls,
¶19 If the Legislature had wanted to conform its standard to the minimal constitutional requirements, it could have done so; however, in adopting a good cause standard, it suggested the possibility of criteria in addition to voluntariness. Involuntariness and discovery of new exculpatory evidence constitute good causes for withdrawal of a plea under § 46-16-105(2), MCA (2001), but others may exist.
See, e.g., United States v. Turner
(9th Cir. 1990),
B. Voluntariness Standard
¶20 While this Court’s interpretation of the Montana Constitution need not march lock-step with the United States Supreme Court’s interpretation of the United States Constitution, this Court has a coordinate responsibility to guarantee the rights enshrined in the United States Constitution. This Court cannot adopt a lower standard to protect any right in the United States Constitution than the United States Supreme Court has recognized. U.S. Const, art. VI, cl. 2 (“This Constitution... shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby....”).
*221
¶21 The United States Supreme Court considers a defendant’s plea voluntary only when the defendant is “fully aware of the direct consequences, including the actual value of any commitments made to him by the court, prosecutor, or his own counsel....”
Brady v. United States
(1970),
¶22 We have held “a plea of guilty will be deemed involuntary where it appears that the defendant was laboring under such a
strong inducement, fundamental mistake, or serious mental condition
that the possibility exists he may have pled guilty to a crime of which he is innocent.”
Miller,
¶23 Although two of the criteria from the Huttinger test (the adequacy of colloquy and the existence of plea bargain) bear on the question of voluntariness, numerous other case-specific considerations may also *222 bear on that question. Because the voluntariness test subsumes the relevant elements of the Huttinger test, we relegate that test to history.
II. The Effect of Fear on a Guilty Plea
¶24 Lone Elk argues that he pleaded guilty unknowingly and involuntarily because he was unduly influenced by hope and fear. Lone Elk cites
State ex rel. Gladue v. Eighth Judicial Dist.
(1978),
¶25 In Gladue, we allowed Gladue to withdraw his guilty plea when the evidence showed
that [he] had always maintained his innocence and plead guilty only after being induced to do so by his attorney of record. Petitioner feared he had no chance of proving his innocence in a jury trial. This raises serious questions about his guilty plea and whether that plea was voluntarily given.
Gladue,
¶26 “The rule that a plea must be intelligently made to be valid does not require that a plea be vulnerable to later attack if the defendant did not correctly assess every relevant factor entering into his decision.”
Brady,
¶27 Pleading guilty to the burglary charge limited his risk to a maximum penalty of twenty years, but it involved a risk of sex offender treatment. Section 45-6-204(3), MCA (2001). The District Court specifically told Lone Elk that his sentence for burglary could require sexual offender treatment. As Lone Elk admitted in court, he understood the repercussions of his decision, and he understood the risks. Simply because the results failed to turn out as he expected or desired, the District Court need not allow him to withdraw his guilty plea.
III. The Effect of Medication on Guilty Pleas
¶28 Lone Elk claims he was not stabilized on his anti-depressant medication at the time he entered his guilty plea and, therefore, his plea was unknowing, unintelligent, and involuntary. We agree with the First Circuit that “medication can in some circumstances affect a defendant’s mental state to a degree that undermines the defendant’s ability to enter a voluntary plea.”
United States v. Savinon-Acosta
(1st Cir. 2000),
¶29 We affirm.
