In what he called an effort to restore integrity to the office, state Sen. Nathan Johnson on Tuesday launched a campaign to replace Ken Paxton as Texas attorney general. “It is significant that Ken Paxton has abused the office,

Republican Ken Paxton is challenging U.S. Sen. John Cornyn instead of seeking another term as Texas attorney general.

The third-term Democrat from Dallas faces long odds in a state that has only elected Republicans to statewide office for three decades.