I’d argue that some are not that way. Richard Shelby comes to mind.
>> Richard Shelby comes to mind.
Phil Gramm, back in the ‘80s, switched D to R, and (IMO) he was a good one.
But unlike today’s shameless opportunists, Phil Gramm was an honorable man. He supported Reagan’s tax cuts as a D, as was thrown off his committee. So he RESIGNED HIS SEAT, then ran as an R in the special election for his own vacated seat.