What to expect in New Hampshire’s state primary

New Hampshire's state primary features a critical race to replace retiring three-term Democratic U.S. Sen. Jeanne Shaheen. This contest is among several nationwide that could determine the overall control of the U.S. Senate. Additionally, voters will nominate candidates for high-stakes Senate positions, while a Democratic House primary has emerged as a significant test for the party's establishment. These elections represent pivotal moments for both the Democratic party and the future balance of power.