According to CNBC, New Hampshire voters are heading to the polls Tuesday to choose nominees in a key U.S. Senate race to replace retiring Democratic Sen. Jeanne Shaheen. Rep. Chris Pappas, a Democrat who has represented the state's 1st Congressional District since 2019, is the favorite for the Democratic nomination and leads the fundraising race, while scientist and democratic socialist Karishma Manzur has narrowed the gap in recent public polls. On the Republican side, former New Hampshire Sen. John Sununu is favored over former Massachusetts Sen. Scott Brown. The race is seen as critical to both parties ahead of November's midterm election, with Democrats needing to net four additional seats to flip the Senate and Republicans seeking to protect their majority.