New Hampshire voters choose Senate primary nominees

Voters in New Hampshire are casting ballots in primary contests that will decide the nominees for a key open U.S. Senate seat. The winner will run to replace retiring Democratic Sen. Jeanne Shaheen in the November general election. On the Democratic side, Rep. Chris Pappas is the frontrunner, though he faces a challenge from scientist and democratic socialist Karishma Manzur. Pappas has led fundraising and has backing from Shaheen and other prominent Democrats. In the Republican primary, former Sen. John Sununu is favored over former Sen. Scott Brown. The race matters for control of the Senate, with both parties viewing the seat as important in the fight for the chamber next year.