Pennsylvania declares recount in Republican Senate primary as Dr. Oz' lead shrinks

The Republican Senate primary in Pennsylvania will head to a recount as Dr. Mehmet Oz's lead shrank to less than a thousand votes Wednesday.

Acting Secretary of State Leigh Chapman announced the recount Wednesday, and the process will take several days before a winner is officially declared. Pennsylvania law requires an election to go to a recount when candidates are within half a percentage point of each other.

Votes were originally cast in the primary on May 17.

"We are proud our campaign received nearly 418,000 votes, won 37 of 67 counties, and contributed to a historic turnout with a razor-thin difference between myself and Mehmet Oz," CEO Dave McCormick, who trails Oz by 902 votes, said in a statement.