United States: in the key state of Michigan, Biden passes an important test among the Democrats. Republicans vote and Donald Trump is the big favorite, but it is especially in the Democratic camp that the day could be rich in lessons.

President Joe Biden faces distrust from part of his electorate, particularly dissatisfied with his policy regarding the war in Gaza. During the 2020 presidential election, the Democratic candidate only achieved victory by a margin of 150,000 votes, writes RFI's Elizabeth Frantz.