Still, three-quarters of evangelicals say they agree with their church leaders on politics. Churchgoers are most likely to say they don’t know whether their pastor is a Republican or a Democrat—and many preachers believe that’s a good thing. A new survey by the Pew Research Center finds that almost half (45%) of people who attend services at least a few times a year are “unsure” of their clergy’s partisan leanings. Over a quarter (27%) say their clergy are a mix of both parties, while 16 percent say they lean Republican and 11 percent say they lean Democrat. The job of…