'US Midterm elections tend to be referendums on the unpopularity of the president'

New Hampshire primary voters are selecting candidates for Congress and the governorship, with a critical Senate race emerging after Senator Jeanne Shaheen's decision not to seek re-election. The results serve as a bellwether for the U.S. midterms, reflecting national trends, the impact of Donald Trump's influence, and the economic effects of tariffs on a \"purple state\" electorate.