Flipping:

These two young, fine senators said it was time to change the rules of the Senate, and we didn’t. And they were right. The rest of us were wrong—or most of us, anyway. What a shame… If there were anything that ever needed changing in this body, it’s the filibuster rule, because it’s been abused, abused and abused.

And Flopping:

I’m not personally, at this stage, ready to get rid of the 60-vote threshold.

H/T Ezra Klein