They appear to be conservative, except pacifist. Such counties (esp. Lancaster, PA) had strong swings towards Obama.
Over half a million people live in Lancaster County, a large majority of whom are not Amish. All of the south central PA counties (except Adams and Perry, I think) were in the top ten among counties which swung Democratic in 2010. Anyways, Amish people do care about politics and voting, and their state (and national I assume) representatives work hard to keep them pleased, which is difficult since they need special exceptions to a lot of laws (the most famous of which is social security.) When I worked in the capitol I'd see people whom I assumed were Amish due to their dress occasionally. Outside of the city of Lancaster most (all?) of the legislators from LC are Republicans, so I assume you have your answer there.
