According to an LA Times/Bloomberg poll, yes. And, it is not a political party based decision.
http://www.morrissuntribune.com/articles/index.cfm?id=12529§ion=opinion
http://www.statesmanjournal.com/apps/pbcs.dll/article?AID=/20080109/BLOGS28/80107040/1046/OPINION
Many claim it is the party activists that drive candidates to the extremes during the primaries. This issue does have some very active, especially in the Republican Party. This issue will be dangerous to any Republican candidate that grabs firmly to issue. Both McCain and Huckabee have tried to have a shade of gray position. But, the Laura Ingrahams, Pat Buchanans, Lou Dobbs, Jay Severins, and others in rightwingnutosphere are going to keep pulling on those Republican Candidates.
Most of us, it would seem, have more pressing issues to hold our attention.