Tuesday is a big day for primary elections. Here's who's running in six key states and how it could affect the balance of power in Washington. (Photo: Tegna)

Trump handpicked challenger Ed Gallrein after Massie broke with him over issues including the release of the Jeffrey Epstein files. The first polls there closed at 6 p.m. ET. In Georgia, Republicans are choosing a challenger to take on Democratic Sen.

Voters are going to the polls Tuesday for primaries in several states, including the most expensive House primary in history.