I’m not sure who is wetting themselves

At The Other McCain Smitty writes of Marco Rubio –

There is a reason why lesser candidates are wetting themselves at the thought of running against a simple, humble, clear speaker:

but at the moment Crist doesn’t seem cowed, in fact he is leading in the polls. Personally I like Rubio and hope he wins but people shouldn’t be so quick to write off Crist, especially given the record of outside challengers. In this cycle none of them have won. Yes Brown, Christie, and McDonnell won but they all had the backing of the national party. Hoffman, Stutzman, and a couple others I can’t remember lost.