Democrat James Talarico, 37, of Austin, is running about even with Republican Attorney General Ken Paxton in the U.S. Senate race, according to reporting from The Texas Tribune. The story describes it as the most expensive Senate race in the country.

The story says Republicans are concerned about the possibility of a Democratic win in Texas, a state where no Democrat has won statewide in more than three decades. It reports signs of weaker Republican turnout in early voting. It also says control of the U.S. Senate could depend on the outcome in Texas.

According to the story, Democrats have spent nearly $100 million on ads calling Paxton unfit for office, and Talarico has raised more money than any other Senate candidate in the country. Both parties are weighing how the results could affect future elections.