One of the nation’s more well-known Republicans has bolted his party. I’m going to presume for the purposes of this blog post that it’s because the Party of Lincoln has become the Party of Trump and Joe Scarborough no longer is comfortable with that association.

Scarborough — who says he’ll register as an independent — is now host of an MSNBC talk show, “Morning Joe,” which he co-hosts with Mika Brzezinski. They’ve been in the news of late, with Donald J. Trump tweeting some nasty comments about Brzezinski, who happens to be Scarborough’s fiancée. It’s complicated, yes?

But the Scarborough’s departure from the GOP is part of a trend that swings in both directions, involving both major parties. It happens when a particular political party veers into an dramatically different direction. Such is the case with the Republican Party that nominated an inexperienced entertainer as its presidential nominee who then has behaved like someone who is clueless about political decorum, norms and custom.

Oh, and he’s also someone who continues on the same insult and innuendo barrage that got him nominated and then elected.

Scarborough is no Republican In Name Only, although I’m sure the devoted Trumpkins out there will call him a RINO as often as possible. He once voted to impeach President Clinton when he was serving in the House of Representatives from Florida. He fancies himself as a serious conservative thinker and commentator. He joins a few other long time prominent Republicans who have left the party for essentially the same reason. The noted Washington Post columnist George Will is the most notable example.

Here in Texas, we’ve seen a dramatic shift in the other direction over many years as the state shifted from true blue to deep red. Democrats became Republicans because of the shift in Democratic Party ideology. I can think of several individuals: former state Rep. Warren Chisum of Pampa; the late former Gov. John Connally; former Gov. Rick Perry. They all were Democrats when they entered public life. They are far from the only Texas Democrats who would no longer feel comfortable with the party of their political “birth.”

So, now it’s Scarborough who’s bolted the GOP.

My hunch? We’re going to see more political out-migration.