ABC News -- ABC News Rick Klein reports: With a conservative revolt pushing a Republican candidate out of a key House race in New York State, the head of the conservative group Club for Growth is warning that other Republicans could face similar fates in primary races next year -- and Gov. Charlie Crist, R-Fla., is at the top of that list. Club for Growth president Chris Chocola said on ABCNews.coms Top Line that Crist -- whos running for an open Senate seat next year -- and other moderate Republicans can expect aggressive primary challenges. The club is considering endorsing Florida House Speaker Marco Rubio in a tightening primary race against Crist, Chocola said. Were seriously looking at it. We like Marco Rubio a lot. We think that Charlie Crist...