Most people vote on the character of the candidate....issues are normally secondary. The birth certificate issue has the potential of demonstrating that he is a fraud and a liar.
The way Obama and the Democrats have handled every issue and emergency since taking power is proof that they are all frauds and liars. The birth certificate issue has the potential of being the poison pill that destroys any chance of not just winning the presidential election, but also losing any gains we made in 2010. This could be our last meaningful election and you want to piss it all away on a birth certificate that could exist and is just being used to lure you in for the kill.