Can a Christian politician be effective nowadays?

Jummy Carter has been a huge bust not only as a President, but one who has undermined America time and time again. Only his work at Humanity has saved any respect for this flawed and failed ex-President. Some Senate and House reps have been elected and the voters knew they were Christian. Bill Clinton claimed he was, so did Al Gore and of course, George Bush has made no effort to escape his Christian nomenclature. But, today, the USA is facing another religion which is growing faster and is so evil that it is even dividing Americans of many religious persuasions. Bush is off to a Hindu nation, India and another Muslim nation, Pakistan. Will he be effective there? Will his policies of democracy, freedom, liberty and anti-terrorism catch the favor of those two nations? Bush really believes in truth, righteousness and yet his enemies call him a liar, a crook, incompetent and his enemies really (if wrongly) fear that he will bring about a religious-authoritarian government. Gov. Rommney is a Mormon, not a standard Christian. Will his views be blasted if he runs for President? Will anti-Catholic hate rise its ugly head if some Catholic Senators run for President? Does one have to be a pure secularist, or a socialist with no religious foundations to be trusted anymore? I hope not. The hate and lies toward the President and unfortunate mistakes that W has brought on himself seem to have taken a political toll. I wonder if it will be so devastating that any Christian running for office will be declared persona non grata???