It’s one thing to begrudgingly argue that as dangerous as he thinks a Trump presidency would be, that he thinks a Clinton presidency would be even worse. But to actually say that he would be “honored” by the chance to speak on Trump’s behalf at the GOP convention, and to downplay his previously stated problems with Trump as mere “policy differences,” is to prove the Rubio skeptics right.

That is, far from being an inspirational moral leader, Rubio has shown himself to be more of an opportunistic politician with his finger to the wind. He latched on to the Tea Party energy when he needed it to launch a long-shot Senate bid against an establishment figure in 2010. He embraced the idea of comprehensive immigration reform in 2013 in the wake of a GOP “autopsy” suggesting it was necessary to win in a changing electorate, but then downplayed it as it became a hindrance to his presidential campaign. Now he’s desperate to reconcile his past words about Trump — from just over two months ago — with his political need to fall in line behind his party’s nominee.

For all of Rubio’s rhetoric about responsible leadership, he’s now willing to embrace a demagogue just because that demagogue has an ‘R’ next to his name. Trump, for all his faults, has managed to expose Rubio’s true character — and it is not pretty.