New Hampshire goes to the polls in primary for key open Senate seat
Rep. Chris Pappas, D-N.H., Democratic candidate for U.S. Senate and Dr. Karishma Manzur, Democratic US Senate candidate for New Hampshire. Tom Williams | CQ-Roll Call, Inc. | Mel Musto | Bloomberg | Getty Images New Hampshire voters head to the polls Tuesday to nominate candidates for a key U.S. Senate race to replace the retiring…