I thought "single-issue" pro-lifers would be the most difficult hurdle for Giuliani to overcome, but after the last couple of days I'm convinced gun owners are far more likely to stay home in 2008 or vote for third party candidates.
I know plenty of gun owners here on Free Republic (who have said so) and who have never been on Free Republic who will be voting for Rudy. That does not matter to them. They have their guns and they know Rudy is not planning on taking them away from them. And they wouldn't be caught dead voting for a useless third party candidate.
The problem with Rudy is that it's not just one issue involved here. There are several. Abortion, guns, gay rights, amnesty - and a lot of potential negatives such as his messy divorce, his poor polling against Hillary in the 2000 NY Senate campaign, and other intangibles such as Bernie Kerik.