the longest serving governor of the second largest state jumps into the presidential race today sending seismic shockwaves across the political landscape. the feeling out here in iowa, the critical day of the ames straw poll. it is saturday, august 13th. i'm chuck todd in ames, iowa. the next hour we'll bring you poll results, expert analysis and how the race changed before my eyes. i'll welcome david gregory to join us now. >> it is early summer testing. you say enthusiasm -- i think enthusiasm begets organization. i think that's what michele bachmann benefited from. as i've been going around, chuck, michele bachmann is in sync with a lot of the mood of the primary voter on the republican side right now. they are enthusiastic and angry. they want to send a message to president obama and she seemed to capture that in a great way