Can Dramatic Flair Beat Persistence in the Presidential Race?

For a moment at least, Hollywood flair has trumped the policy wonks in the battle for the Republican presidential nomination. Last night, while eight Republican candidates trudged through yet another debate, Fred Thompson upstaged them -- from Los Angeles. He went on the Tonight Show with Jay Leno and announced he was running for the White House. After stealing the spotlight with his late entry into the race, does the actor and former senator have the substance to win over conservatives? How will he fare against intense scrutiny on issues like abortion and immigration?