Texas Republicans head to the polls Tuesday for one of the most closely watched runoff elections in the country, with the GOP U.S. Senate runoff between John Cornyn and Ken Paxton dominating national political attention.

The Republican National Committee has approved a significant rule change that could reshape how Republicans campaign in midterm election years. At its winter meeting in Santa Barbara, California, the RNC voted to allow the party to hold a national convention during a non-presidential election year, opening the door to a potential midterm convention ahead of the high-stakes 2026 elections.