"Determining whether manifest necessity exists to justify the declaration of a mistrial requires a balancing of competing concerns: the defendant's interests in completing his trial in a single proceeding before a particular tribunal versus the strength of the justification for a mistrial." State v. Solomon, 157 N.H. 47, 52, 943 A.2d 819 (2008) (quotation omitted). "A trial court must therefore take all circumstances into account, and should allow counsel to comment as well as consider alternatives before declaring a mistrial."
State v. Howell, 158 N.H. 717, 719, 973 A.2d 926 (2009). A defendant is placed in jeopardy when a jury is empaneled and sworn, State v. Paquin, 140 N.H. 525, 528, 668 A.2d 47 (1995), or, in the case of a bench trial, when the judge begins to hear evidence, State v. Solomon, 157 N.H. 47, 50, 943 A.2d 819 (2008). After jeopardy attaches for a particular offense, it "terminates"—thereby prohibiting retrial for the same offense—upon a judgment of acquittal or conviction, cf.Johanson, 156 N.H. at 156–57, 932 A.2d 848, or upon an "unnecessarily ... declared" mistrial preventing either judgment, Solomon, 157 N.H. at 50, 943 A.2d 819 (quotation omitted).
As a corollary, “It is fundamental that … the defendant has a valued right to have his trial completed by a particular tribunal.” State v. Solomon, 157 N.H. 47, 50, 943 A.2d 819 (2008) (quotation omitted). “The right to a particular tribunal is [a defendant's] right to complete a trial with a chosen jury, once sworn, or a particular judge, once evidence has commenced.”
See Trustees of Dartmouth College v. Woodward, 17 U.S. (4 Wheat.) 518, 625, 4 L.Ed. 629 (1819) ("On the judges of this court, then, is imposed the high and solemn duty of protecting, from even legislative violation, those [rights] which the constitution of our country has placed beyond legislative control; and, however irksome the task may be, this is a duty from which we dare not shrink."); State v. Solomon , 157 N.H. 47, 943 A.2d 819, 824 (2008) ("The protection of constitutional rights is a core function of the judiciary.") (citation omitted); U.S. v. Ghailani , 686 F.Supp.2d 279, 290 (S.D.N.Y. 2009) ("Determining whether a person's constitutional rights have been violated and fashioning appropriate relief is a core, traditional function of American courts."). Accordingly, the majority's analysis should have focused on the petitioner's rights under the Confrontation Clause, rather than a mechanical application of West Virginia Code §§ 62–6B–1 to –4.