Here Are the Top Senate Primary Contests to Watch for 2026

WASHINGTON—After just five months of the 119th Congress, elections to the 120th Congress to be held in 2026 are on the horizon. Already, several longtime U.S. senators have announced their retirement at the end of this Congress, prompting several contenders to announce their candidacies. The primary elections for Senate seats—the first step in the process, where parties will determine their nominees for the general election—are expected to be hotly contested. Given that many of the states involved are safely governed by one party, i.e., “red” or “blue” states, as opposed to battlegrounds, a victory in the primary entails a likely victory in the general election and the possibility of long service in the Senate....