Mahmoud's hatred for same sex marriage, abortion and women's rights as well as his general hatred of all modern ways of thinking and his desire to make America an 11th century theocratic hell on earth would make him more wildly popular with Conservatives than Ronald Reagan. He wins the entire South minus Florida, NC, and Virginia while winning Utah, Idaho, Wyoming and Alaska.
I doubt many conservatives (especially many socially conservative religious ones) would vote for a guy who hates Jews and Israel (many Christians have strong support for Israel due to Armageddon, etc.). BTW, Ahmadinejad does not hate all modern ways of thinking--he supports using modern technology like tanks and AK-47s to crush his opposition. BTW, Ahmadinejad does not want to send the U.S. to the 11th century--he likes modern technology. Only the Taliban would want to do that.