I agree that church's shouldn't make endorsements of any kind.   Church and state is just bad mix.   An honesstly, it's the church that comes out the worst for wear.   Jesus by all accounts was not a political person and his kingdom had nothing to do with our earthy kingdoms/nations/states.   

When the church becomes sponsors of poltical representatives, it diminish the vision on an eternal soul guided by universal principles, in exchange for the intoxicaion of human power serving human ego's.