Pappas-Sununu showdown set in Democrats' must-win Senate race: 3 takeaways from New Hampshire

Rep. Chris Pappas (D) and former Sen. John E. Sununu (R) are poised to face off in November for New Hampshire’s open Senate seat — one of the GOP’s best pickup opportunities as they look to hold onto the upper chamber. Pappas and Sununu, the favorites in their respective primaries, defeated a handf