Complex sentence: A prominent figure in the Democratic Party of the U.S. state of Texas and a three-time Democratic nominee for statewide office, he is a self-styled "People's Democrat" and civil rights attorney.
Split into simpler sentences: A prominent figure in the Democratic Party of the U.S. state of Texas and a frequent Democratic candidate for public office. A three-time Democratic nominee for statewide office, he is a self-styled "People's Democrat" and civil rights attorney.