Alaska might be a unique political animal, but this result along with others show Democrats are on the march since SCOTUS overturned Roe v. Wade. By weaponizing the Republicans' attack on abortion rights and tying Republican candidates to Trump, Democrats can continue to succeed in the midterms the way they have in special elections this summer.
Without ranked-choice voting, Palin would've been a shoo-in. We can thank Republican turncoat Sen. Lisa Murkowski, who was selfishly instrumental in its adoption to assure a win in her own primary, for this outcome. If Republicans win this seat in the fall, they should move to abolish this system.
It wasn't the system that cost Republicans, it was the candidate. Palin was unpopular to start the campaign and did nothing to change voters' minds, so many left her off their ballot even when they voted for Begich. This isn't a sign Democrats are going to prevail in Alaska or anywhere in the nation this fall, it's just a lesson for Republicans to avoid nominating unpopular figures.