Lately, it's been a political guessing game of which Donald Trump is going to show up.
In the past 24 hours alone, the whiplash between what rival-turned-uneven-surrogate Ben Carson called the "two different Donald Trumps" was on bold display.
From a serious foreign policy address in the morning, he returned just hours later to his regular slapstick mockery of his rivals. But as Trump moves even closer to securing his party's White House nomination, the unpredictable dichotomy is one that's sure to worry GOP leaders, anxious over which Trump will show up when it matters most in November.
On Wednesday evening, it was pure, unfiltered Trump who took the stage in Indiana. Hoosier legend, former Indiana University basketball coach Bobby Knight (whose own temper is controversial in itself), introduced him, endorsing the real estate mogul as "the most prepared man in history to step in as president of the United States."
"There has never been a more honest politician than Donald Trump," said Knight, who was fired from IU in 2000 after "uncivil, defiant and unacceptable" behavior that included allegedly choking a player.