I'm not saying that both parties breed the same kind of people - far from it, especially in recent years. However, I *do* believe that there is a big...sort of stigma associated to the concept of changing parties in the US, be it as a politcian or as an actual voter. And there is a *lot* more leeway given to your own party's candidates and statements and actions than the other's. To a degree that's human, but it is vastly amplified by the US's everywhere-but-on-paper Two Party System. I actually consider this absolute party minimalism as one of the root causes of it all. Switching parties means the only (usual) option is switching to the people you were opposed to, before.
From an outsider's perspective, US politics, even before Trump, were very, VERY aggressive and competitive fights between pretty much the two only existing teams, and the recent years just drove that absolutely to the extremes.
That said...
There are always people who are a bit more rational in their decisions. I think a good deal of people who actually discuss (instead of parrot) politics on forums like these belong in that group, thankfully.
But, even here on VVO (or was that near the end of SLU?) I do recall having seen posts along the lines of "Do not vote for minor parties you'd like, it won't work, vote Dem so we make sure Trump loses".
Which is literally another way of saying "Do not try to win your thing, instead make sure that guy over there does not."
P.s.
...please don't vote for Ted Cruz, ever >_>