Former US Sen. John E. Sununu won New Hampshire's Republican primary Tuesday for the open seat he lost 18 years ago. Sununu defeated another former senator, Scott Brown, and six other candidates to advance to the general election, the AP reports. He hopes to replace US Sen. Jeanne Shaheen, a Democrat who ousted him in 2008 and is retiring after three terms. He will face Democratic Rep. Chris Pappas in November. Pappas, whose departure from his 1st Congressional District seat in turn attracted a crowd of candidates, defeated four candidates in the Democratic primary for the open Senate seat.