I doubt it, but you never know."
I watched President Trump's rally in Lititz and it featured prominently four young Amish-looking men standing behind the President, enthusiastically clapping.
I say "Amish-looking" rather than "Amish" because their dress seemed a bit off to me, but that might just be something they do locally.
For sure, Lancaster is known as a hot-bed of liberalism among the Amish -- keep in mind that what's "liberal" to the Amish is quite different than to us! ;-)
Traditional Amish want nothing to do with "English" politics, but some may understand that supporting conservative politicians could benefit them -- or at least minimize the damage from "English" culture & laws..
Four young men, some possibly Rumspringers, does not suggest to me they've suddenly abandoned traditional isolation.