Complex sentence: His opponent Maxine Waters has been serving in Congress since 1991, in 2016 Navarro lost the general election to Waters with Waters winning 76.1% of the vote to Navarro's 23.9%.
Split into simpler sentences: His opponent Maxine Waters has been serving in Congress since 1991. In 2016 Navarro lost the general election to Waters, Maxine Waters won 76.1% of the vote to Navarro's 23.9%.