JACKSON, Miss. (AP) — State Sen. Chris McDaniel says he'll announce Wednesday whether he will file a formal challenge of his loss to six-term U.S. Sen. Thad Cochran in the Mississippi Republican primary runoff.

State law specifies that McDaniel's first challenge would be filed with the state Republican Party executive committee. His campaign attorney, Mitch Tyner, has said McDaniel could file a lawsuit in state court about 10 days after filing a challenge with the party.

Certified results of the June 24 runoff show Cochran won by 7,667 votes.

McDaniel says he believes there might have been thousands of improper votes cast, but he hasn't released documents to support that claim.

The Cochran camp says there might have been hundreds of improper votes, but not enough to overturn the election.

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