Political experts attribute much of Texas' increased voter turnout as a reaction to the election of President Donald Trump in 2016, as well as the state's eight open congressional seats.

"In general, there seems to be more energy, largely stemming from people's reactions to President Trump and a lot of Democrat-leaning groups trying to get people out and organized," said Robert Lowry, a political science professor at the University of Texas at Dallas. "It's maybe more Democrats than Republicans, but people who oppose him and don't like the results of the election and can't believe he won, [saying] 'We obviously can't vote against him this time but we can try to get more Democrats elected to respond to him.'"