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Texas Governor Rick Perry fires a six-shooter pistol in downtown Fort Worth during a promotional event with Texas Motor Speedway on April 15, 2010 in Fort Worth, Texas.

Eight Republican presidential candidates meet at the Reagan Library for a debate. It's the first match-up since Texas Governor Rick Perry joined the race less than a month ago. Perry weighed staying in Texas where wildfires are raging, but his campaign says he plans to be in place in California tonight. What are Republican voters looking for in a candidate, and who has the most to gain - and lose - tonight? We're joined by Politico reporter Molly Ball and GOP strategist Reed Galen.