I see little reason why you should get multiple attempts. When your pool of potential candidates is 100 million people, there’s very little “improvement” that could be done that would bring you up like, more than a standard deviation in ability. And if there is, you should do that improvement before becoming the major party nominee for president.

Kamala is honestly the most extreme example, she shouldn’t just not be running for president, she should be in prison, both for the numerous war crimes she’s complicit in and for her failure to abide by the 25th amendment and remove an ailing president.