In winning Texas by 16 points, winning Oklahoma, winning (as of this writing) Alaska, and finishing second in Alabama, Arkansas, Minnesota, and Tennessee, Ted Cruz has now solidified his grip on second place in the ‎GOP presidential race. He increased his lead over Marco Rubio in states won, votes won, and delegates won—and unless Rubio can win in Florida in two weeks (or John Kasich can win in Ohio), Cruz may soon be battling Donald Trump one-on-one (more or less) for the Republican nomination. But how can Cruz beat Trump?

The number-one thing that needs to be undone from the Obama presidency also happens to be one of the things that Trump knows the least about and on which he has the least-reliable impulses. That thing, of course, is Obamacare. It is not only the centerpiece legislation of Obama’s presidency, but opposition to it unites Republican voters across the party more than perhaps any other issue. ‎ Trump is extremely suspect on it. But it’s hard for Cruz to frame Trump as particularly unreliable on Obamacare when Cruz himself has yet to offer a clear plan to get to repeal. But that could potentially change overnight.