The first-in-the-nation primary could be the last stand for the anti-Trump Republican.

Since 2016, a shrinking band of Republican strategists, retired American lawmakers and donors has tried to oust Donald Trump from his commanding position in the party. And again and again, through one riot at the U.S. Capitol, two impeachments, two presidential elections and four criminal indictments, they have failed to gain traction with its voters.

Now, after years of legal, cultural and political crises that upended American norms and expectations, what could be the final battle of the anti-Trump Republicans won’t be waged in Congress or the courts, but in the packed ski lodges and snowy town halls of a state of 1.4 million residents.