Liberal politicians have a longtime bond to liberal churches that promote them and their liberation Marxism. Tax exemption and attempts by the government to silence churches has done little to stop them. Let a conservative church promote a candidate that reflects Christian positions on small government, culture and family, and the left will scream for the tax man to come. Attempts by the government to silence free speech in churches is part of the broader attempt to silence conservatism and control political education.
My pastor speaks out on a wide variety of cultural/political issues (like homosexuality and aborition). His standard line is go ahead, take away our non-profit status, if keeping it is your biggest worry you have much bigger problems that THAT.