I didn't answer your question relative to Senator Brownback because political party affiliation has nothing to do with the issue at hand (as I posted earlier).
Political party affiliation, including any/all of the parties, is not a consideration in the qualifications for speaking at an Evangelical, Christian church (unless maybe you are talking the socialst party, the communist party, or so forth).
Guilliani would get as much grief as Obama, (if not more) if he was invited to speak at Saddleback.
To be held Nov 30 and Dec 1st (a Thursday and Friday )