JACKSON, Miss. (AP) — Tea party-backed challenger Chris McDaniel still isn't conceding to six-term Sen. Thad Cochran in the Mississippi Republican primary runoff, but some groups that spent millions supporting McDaniel are walking away.
McDaniel supporters are examining poll books to try to find people who voted in a Democratic primary June 3 and the Republican runoff Tuesday.
Mississippi voters don't register by party, but state law bars a person from voting in one party's primary and the other party's runoff.
Cochran topped McDaniel by nearly 6,800 votes Tuesday.
McDaniel criticizes Cochran for courting Democrats in a state where most blacks vote Democratic and most whites vote Republican. Turnout jumped in several majority-black counties, boosting Cochran.
Club for Growth, which spent more than $3.1 million to help McDaniel, has congratulated Cochran.