In the quiet ritual of a Tuesday primary, New Hampshire voters step into a role larger than any single state — their choices among Senate candidates rippling outward to shape which party will hold the levers of federal legislative power after 2026. In a chamber divided by the narrowest of margins, a handful of competitive seats carry the weight of national consequence, and New Hampshire's swing-state character places it at the center of that reckoning. The candidates who emerge from this primary will carry not just a party nomination, but a mandate that both sides of the aisle have already beg