Every election cycle since 2010, we have published profiles of some of the many outside groups trying to influence who gets elected to Congress and the White House. Today, we’re launching our latest Players Guide with write-ups of eight of the biggest spenders so far for the 2026 midterms. If the group has been around for a while, we note its spending during the prior election cycle for comparison. Come back throughout the general election for details about other key players, as we’ll be publishing more profiles over the next three months. If you prefer to give by check, send to: FactCheck.org, Annenberg Public Policy Center, P.O.