FiveThirtyEight: “We looked at candidates who’ve run for U.S. Senate, governor or president after they lost just one election and then tried to run again and found that since 1998, only 33 of 121 of them have managed to win higher office after having lost once.”
“But after two failed bids, the numbers get even worse. Just 20 people have run for U.S. senator, governor or president after losing two consecutive elections. And only one, Louisiana Sen. John Kennedy, who won a 2016 runoff race after losing two previous Senate races, was successful.”