It’s difficult to glean a platform from Trump’s powerfully incoherent rhetoric while navigating the quicksand-like task of separating fact from Trump’s many exaggerations and outright falsehoods in thousands of interviews. It’s perhaps harder still to get the GOP front-runner to address policy questions directly: the candidate often declines to offer specifics, arguing that unpredictability is an advantage he’ll use to cut better deals just as his critics say this is a sign he doesn’t know what he’s talking about.

Trump’s shifting stances aren’t just challenging for reporters tasked with covering him (like the day when Trump offered up three different views on abortion in a matter of hours) they’re also a source of consternation for his party as more than a few of his stated policies directly contradict the GOP platform. Consider the debt flip: a desire to rapidly pay down the debt is one of the only issues the divided Republican Party can agree on, but their presumptive nominee has made a bold argument for prioritizing infrastructure investment over the debt.

“You have to have a certain degree of flexibility,” the presumptive Republican nominee said in a March debate when confronted on his evolving policy platform, taking a stance on immigration he’d reverse hours later. “You can’t say, it’s OK, and then you find out it’s not OK and you don’t want to do anything. You have to be flexible, because you learn.”

To understand and track Trump’s views, we’ve compiled a list of his past and present positions on issues since the billionaire real estate mogul announced his candidacy, along with any explanation the candidate has offered on the changes.