Despite what you hear from Democrats, voting in the United States is ridiculously easy. Mail-in ballots, absentee ballots, provisional ballots if you're not sure, and ranked-choice ballots if you want to confuse everyone. But before all that, there's registering to vote. This, too, is ridiculously easy, although potential voters must make an effort to sign up. The funny thing about voter registrations is that they supply a "tell" for how an election will go. This is especially true in states where voters register by party. Alex Castellanos, senior aide to the campaigns of Jeb Bush and Mitt Romney, told Fox...