Last week, the Arizona senator Kyrsten Sinema announced that she would be leaving the Democratic Party and registering as an Independent—a decision that seems especially dramatic given the Democrats’ slim majority. Yet Sinema is joining a growing bloc of about forty per cent of the electorate that does not identify with either party. Amy Davidson Sorkin joins Tyler Foggatt to discuss the causes of this widespread dissatisfaction, and whether an Independent movement could energize electoral politics in our highly partisan moment. “In theory, a third party would be great, and yet it’s so worrisome because there’s all of these real threats to democracy in the last few years,” Sorkin says. “But another threat to democracy is people feeling deeply alienated from politics and like there is no home for them.”