AUSTIN, Texas—Tea Party darling Ted Cruz convincingly defeated the Republican establishment favorite, Lt. Gov. David Dewhurst, in Texas' runoff election Tuesday, capturing the GOP nomination to replace retiring U.S. Sen. Kay Bailey Hutchison as fiercely conservative voters shook one of America's reddest states to its political core.
The race had been closely watched nationally as one of the nation's most-vivid contrasts between the GOP mainstream and grassroots, conservative activists. But as results began to pour in, it turned out to be no contest. Cruz grabbed early leads in key cities around the state where Dewhurst had once enjoyed stronger name recognition, fundraising and political organization just weeks earlier.