Several of the key voter groups that provided President Donald Trump’s most important electoral gains in November are recoiling from him as his term moves past the 100-day mark. But it remains unclear how much Democrats can benefit from these growing doubts. In 2024, Trump improved his performance among some big voting blocs that have historically favored Democrats, including Latinos, younger men, non-White voters without a college degree, and, to some extent, Black men. Trump’s advances generated exuberant predictions from an array of right-leaning analysts that he had achieved a lasting realignment and cemented the GOP’s hold on voters of...