"Trump and Biden Secure Victories in Michigan Primary Elections"

President Biden won Michigan’s Democratic primary election, but faced significant opposition over his support for Israel as it wages war in Gaza, with a substantial percentage of voters casting ballots for “uncommitted” as part of a protest movement against him. Former President Donald J. Trump also won the Republican primary, demonstrating enduring weakness within both parties as meaningful numbers of Democrats and Republicans voted against them. The "uncommitted" movement aimed to warn Mr. Biden to change his stance on Gaza or face repercussions in November, with the threat most urgent in Michigan, which was vital to Mr. Biden’s 2020 victory.