Of late, Kirk has acted like an endangered blue-state Republican should: He’s voted against defunding Planned Parenthood and in favor of tighter gun-sale restrictions. When Donald Trump proposed a ban on Muslim immigrants, he spoke out against the proposal. Time and time again, he’s found ways to distance himself from the national GOP. But he remains a heavy underdog. A handful of smart votes haven’t erased the memory of a summer of gaffes or his anemic fundraising. And he’s still likely to face a potentially formidable opponent, Democratic Rep. Tammy Duckworth, in the general election. In our minds, there’s little question that the first-term senator’s seat is the most likely to change hands next year.