delivered the Opinion of the Court.
Lеwis sought review of the court of appeals' judgment in People v. Lewis, No. 04CA2072,
We granted certiorari solely on the question whether Henderson should be overruled in light of the United States Supreme Court's subsequent determination, for purposes of certain constitutional guarantees, that any distinction between an "element" of an offense and a "sentencing factor" is inconsequential. See Blakely v. Washington,
I.
Gerald Dwayne Lewis was charged with multiple kidnapping and sexual-assault-relat *481 ed offenses, as well as various counts of assault, burglary, theft, committing crimes of violence, and being an habitual criminal, all arising from three separate incidents, which extended оver a two-week period and involved three different underage girls. In each instance, the defendant was accused of isolating his victim somewhere in a church or school; threatening, if not actually wounding, her with a knife or similar weapon; and using force to inflict vaginal or anal penetration on her. Notwithstanding his plea of not guilty by reason of insanity, the jury found twenty-four counts proven against him, and he was sentenced to more than 700 years of incarceration.
On direct appeal, the court of appeals affirmed all of the defendant's convictions and sentences. Among his assignments of error, the defendant challenged the validity of his separate convictions and sentences for both sexual assault and second degree kidnapping, where his kidnapping convictions were elevated from class four tо class two felonies for the very reason that he sexually assaulted his kidnap victims. Although he acknowledged that this court had previously rejected identical challenges on the basis of double jeopardy and both judicial and statutory merger, he argued that subsequent holdings of the United States Supreme Court now require a different result. Although we denied the remainder of his petition for a writ of certiorari, we agreed to consider the limited question whether People v. Henderson should be overruled in light of the subsequent United States Supreme Court holdings in Apprendi v. New Jersey and Blakely v. Washington.
IL.
The Colorado General Assembly proscribes "Sexual assault" and "Kidnapping" in separate Parts of the Criminal Code. See Title 18, Art. 3, Parts 8 and 4. In different statutory sections within Part 8, the General Assembly also separately designates and defines the crimes of "First degree kidnapping," § 18-83-8301, CRS. (2010), and "Second degree kidnapping," § 18-8-302. Second degree kidnapping is statutorily classified as a class four felony unless it is accomplished in one of three specifically enumerated ways, any of which has the effect of elevating the offense to a class three felony, see § 18-8-802(4), or unless the kidnap victim is also subjected to either robbery or sexual assault, a cireum-stance which elevates the offense to a class two felony, see § 18-38-8028). Whether second degree kidnapping is committed as a class two, three, or four felony, the crime of which the defendant stands convicted remains statutorily designated "Second degree kidnapping."
In North Carolina v. Pearce, the United States Supreme Court characterized the Double Jeopardy Clause of the Fifth Amendment as protecting individuals from prosecution after either an acquittal or conviction of the same offense, and in addition, from being subjected to multiple punishments for the same offense.
In Powell, we considered the very statutory scheme at issue here and, in direct reliance on our reasoning in Haymaker, held that a defendant convicted of sexual assault and class-two-felony second degree kidnapping, under section 18-3-802(8), had not been subjected to unconstitutional double punishment.
In Henderson, we made clear that our holding in Powell applied equally to the rule of merger as understood in this jurisdiction. After reviewing the "variety of meanings" given the term "merger" and finding the common law doctrine of that name largely meaningless and abandoned in light of both сonstitutional and statutory developments,
In subsequent cases, our analyses of merger have focused more expressly on the General Assembly's statutory treatment of multiple convictions and punishments for offenses charged in a single proceeding. See, e.g., Armintrout,
Under the included-offense standard of section 18-1-408, we have therefore consistently held that one offense is included within another if proof of facts establishing the statutory elements of the greater offense necessarily establishes all of the elements of the lesser offense. At the same time, in a variety of contexts, we have emphasized the significance of the legislature's choice to draft by structuring particular cireumstances or conditions concerning the commission of a crime as factors enhancing its sentencing range rather than as elements of a new and greater offense. Whether the effect has been to permit multiple convictions, eg.,
*483
Henderson,
II.
That the legislature's use of this drafting technique evidenced an intent to distinguish the elements of sexual assault from those of class-two-felony second degree kidnapping, and to specifically authorize punishment for both, was less than self-evident at the time of Henderson. Despite the dissent of three Justices, however, the majority's interpretation has remained the law оf the jurisdiction for two decades, not only with regard to the relationship between sexual assault and kidnapping, in particular, but also with regard to the distinction between elements and sentencing factors generally. The merits of our statutory interpretation in Henderson are not directly at issue here. Instead, the defendant asserts that subsequent decisions by the United States Supreme Court have undermined both the jeopаrdy and merger rationales of Henderson and have effectively overruled its holding concerning the permissibility of cumulative punishments.
In a line of cases beginning with Apprendi v. New Jersey,
Subsequently, in Sattazahn v. Pennsylvania, despite finding the matter inapplicable to the hung jury situation actually facing them, three Justices opined that there would be "no principled reason to distinguish, in this context, between what constitutes an offense for purposes of the Sixth Amendment's jury-trial guarantee and what constitutes an 'оffense' for purpose of the Fifth Amendment's Double Jeopardy Clause."
Whether or not offenses are the same for purposes of the separation-of-powers concern included in the Double Jeopardy Clause, however, separate convictions and punishments at a single procеeding that are specifically authorized by the legislature never run afoul of constitutional jeopardy protections. Hunter,
With regard to the related question whether even multiple convictions and punishments that could be constitutionally imposed may, under some cireumstances, nevertheless be prohibited in this jurisdiction, the General Assembly has spoken. Because section 408 bars, without exception, the conviction of both a greater and its lesser-included offense, the precise question for purposes of the defendant's statutory merger challenge must bе whether the particular sexual assault offense of which he stands convicted is included in the particular offense of second degree kidnapping of which he has been simultaneously convicted. As distinguished from double jeopardy, where specific legislative authorization is sufficient to justify multiple punishments for even a single offense, section 408 only permits separate convictions of offenses defined in such a way that neither is included within the other. As we implicitly recognized in Henderson, however, to the extent that multiple convictions and punishments are authorized by section 408 unless they fall within one of its prohibitions, the inquiries are indistinguishable.
Because the General Assembly's separate statutory limitation on multiple convictions is self-imposed, the nature and extent of that limitation is necessarily dependent upon a reasоnable understanding of the terms in which the legislature has chosen to define it. Integral to our construction of section 408 as mandating the merger of offenses according to a strict comparison of their "elements" has always been our distinction between those conditions or cireumstances necessary for conviction of a statutorily designated offense and those conditions or cireumstances that merely increase the penalty range for convietion of that offense. This interpretation of the statutory merger standard, which we have consistently referred to as the "strict elements test," has, for at least a quarter of a century, represented our construction of seetion 408(1) and (5)(a).
While we have also equated this test with the "Blockburger test," doing so has clearly reflected our understanding, at the time, of thе standard articulated by the Supreme Court in Blockburger,
*485
Similarly, we have in the past relied on case law predating the enactment of section 18-1-408 for the proposition that double jeopardy and merger seek the same end and that the rule of merger is based on double jeopardy principles. See, eg., Henderson,
It is far from clear that the functional equivalence of elements and sentencing factors for purposes of a criminal defendant's right to a jury trial should apply equally to the constitutional presumption against multiple simultaneous punishments for the same offense. Even if it did, however, that functional equivalence could not alter the fact that the constitutional presumption is overcome by specific legislative authorization or that the question of legislative intent must remain a function of existing drafting conventions and rules of construction. Nothing in the Supreme Court's recent Fifth or Sixth Amendment interpretations, therefore, undermines our prior determination that legislative reliance on a distinction between elements and sentencing factors evidences an intent to avoid the creation of a new offense of second degree kidnapping involving sexual assault, into which the lesser offense of sexual assault could then merge.
IV.
The judgment of the court of appeals sustaining the defendant's convictions and sentences for three counts of class-two-felony second degree kidnapping as well as three counts of sexual assault is therefore affirmed.
Notes
. While Boulies's postconviction motion was not finally resolved by this court until 1989, the offenses of which he was convicted occurred in 1971, before the July 1, 1972 effective date of the Colorado Criminal Code. Boulies,
