Pennsylvania GOP Senate Primary Results Might Not Be Known Until June 8

Republican U.S. Senate candidate Mehmet Oz greets supporters after the primary race resulted in an automatic recount because of close results in Newtown, Pa., on May 17, 2022. Stephanie Keith/Getty Images

One of the most closely followed U.S. primaries might not be determined until as late as June 8.

Three days after the May 17 Pennsylvania Republican U.S. Senate primary election, ballots continue to be tallied. As of midday May 20, celebrity surgeon Dr. Mehmet Oz held a slim lead over former hedge fund executive and Gulf War combat veteran David McCormick.