Congressional primary runoffs with incumbents are rare in Mississippi. This year, two of the state's Republican representatives are fighting to keep their jobs in runoffs against challengers from their own party. U.S. Rep. Steven Palazzo is seeking a seventh term and was considered vulnerable after being accused in a 2021 congressional ethics report of abusing his office by misspending campaign funds. U.S. Rep. Michael Guest is seeking a third term. He voted to create an independent commission to investigate the riot at the U.S. Capitol on Jan. 6, 2021, and was forced into a runoff amid criticism that he was...