TUCSON, Ariz. — No one will ever accuse Jesse Kelly of bringing weak tea to the party. The conservative 29-year-old Marine combat veteran and tea party favorite made waves this week when a video of him criticizing Sarah Palin's endorsements of "people who will sell our principles down the river" surfaced and caused a stir. The brief moment of national notoriety notwithstanding, Kelly is surging at the end of the 8th District GOP primary campaign here, largely on the strength of an impressive grassroots organization and a cocky, free-wheeling style that contrasts sharply with that of the more measured, more...