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.

As the 2026 election season accelerates, Republicans are entering a critical stretch of primary and runoff contests that could help define the party’s direction heading into November.

Republicans are rolling out a $342 million strategy to defend their Senate majority, focusing on Ohio, North Carolina, and key pickup opportunities in Michigan and Georgia.