Do Kennedy endorsements of Biden mean much — even against a Kennedy?

Upon hearing that members of the Kennedy family would be appearing with President Biden at a campaign event on Thursday, my first thought went to another large family: the Gosars.

You are probably less familiar with the Gosar family, if you’re familiar at all. Their imprint on American politics is necessarily more modest than the Kennedys’, constituting one person who won election to the U.S. House. That person is Rep. Paul A. Gosar (R-Ariz.), and he won reelection to his seat despite six of his nine siblings endorsing his opponent in 2018.