Iowa U.S. Representatives have won each of their last 196 renomination bids since the 1950 cycle.
Just six governors hail from a different party than their state’s U.S. Senate delegation; 34 governors are from the same party.
Democrats have won just four of 135 elections to statewide office in the Deep South since Barack Obama became president.
Despite Democrats controlling the nation’s lower legislative chamber by more than 35 seats, Republicans currently have a partisan advantage in 26 U.S. House state delegations.