Sen. Lisa Murkowski (R-AK) has served in the Senate since 2002, in George W. Bush’s first term as president. She was appointed to the seat by her father, Frank Murkowski, after he was elected governor of Alaska.

Since then, Murkowski has won four elections, including in 2010 after losing her Republican primary race, only to win by entering the general election as a write-in candidate. And just how many times has a write-in candidate triumphed in a Senate race in U.S. history before that?