Live results: New Hampshire votes in key Senate race

New Hampshire voters are casting ballots on Tuesday in a critical primary election for a United States Senate seat. Democratic Rep. Chris Pappas is a favorite to win his primary, facing four challengers including medical scientist Karishma Manzur. Simultaneously, former Republican Sen. John Sununu is competing against seven other candidates for the Republican nomination. The primary process is currently underway across the Granite State as candidates vie for the key legislative position in the Senate.