Someone slap a photo of Mike Pence on a milk carton.

The Indiana governor may not have been abducted, but he’s certainly missing in action on the central question facing the Republican Party: Are you with Trump, or against him?

Pence is not alone on the sidelines, of course. But the crowd of politicians with wet fingers trying to determine which way the wind is blowing doesn’t matter. Pence does. If Donald Trump loses the Indiana primary May 3, it is all but certain he will fall short of the 1,237 delegates necessary to win the nomination on the first ballot. Indiana is now the Gates of Vienna for stopping the Trumpian takeover of the GOP.