AUSTIN, Texas—Barack Obama picked up two Texas superdelegates, bringing him within 42 delegates of locking up the Democratic presidential nomination.

more stories like thisTexas Democratic Party chairman Boyd Richie and his wife, Democratic National Committee member Betty Richie, endorsed Barack Obama for president late Thursday.

Texas has 32 superdelegates and the Richies were among a handful of those remaining who had not committed to either Obama or rival Hillary Rodham Clinton.

"I believe Senator Obama is the candidate who can best provide the leadership and change Texans desire," Richie said in a statement issued by the party. "Senator Obama has the skill and ability to unite Americans from all walks of life and put our country back on the right track."

Clinton narrowly won the state's primary March 4, but Obama has prevailed in two rounds of caucuses that also determine pledged delegates from Texas. The final division of those caucus delegates comes next week at the state convention in Austin.