Labor leader Linda Chavez-Thompson won the Democratic nomination for lieutenant governor on Tuesday, capturing 53 percent of the primary vote against two opponents. She now faces incumbent Republican Lt. Gov. David Dewhurst in the fall in a race that will be an uphill battle for the Democrat. Chavez-Thompson used her support from labor and Hispanic groups to establish a strong position in the race and also outspent her opponents - including former Travis County District Attorney Ronnie Earle - by a substantial margin. Chavez-Thompson, 65, of San Antonio, is a former executive vice president of the AFL-CIO and a vice...