4. Orrin Hatch (2000, Republican)
Orrin Grant Hatch has been a U.S. senator for Utah since 1976. In 2000, Senator Hatch entered the race to be the Republican presidential nominee. He ran on a traditional Republican platform of tax cuts, stronger military, and opposition to abortion.
Despite his decades of experience as a senator, Hatch was unable to gain support as a presidential candidate. After withdrawing from the primaries, he threw his support behind Texas Governor George W. Bush.
Senator Hatch became president pro tempore—the second-highest-ranking official of the United States Senate—in 2015. As president pro tempore, Senator Hatch was third in the line of succession to the presidency, after the vice president and speaker of the House of Representatives. In 2018, Senator Hatch announced his retirement and that he would not seek re-election.
BONUS FACT: Senator Hatch plays the piano, violin, and organ and has written several songs. For example, he and Janice Kapp Perry co-wrote the song “Heal Our Land,” which was performed at George W. Bush’s January 2005 inauguration.