John E. Sununu holds a dominant position in the New Hampshire Republican Senate primary, with recent University of New Hampshire polling from April showing him at 56 percent support among likely primary voters compared to 19 percent for Scott Brown. This positioning stems from Sununu's substantial fundraising edge, including nearly $1.9 million cash on hand after the first quarter, alongside former President Trump's February endorsement that consolidated early party backing. Brown continues to emphasize an outsider approach against perceived family political influence, yet trails in successive surveys from Emerson College and Saint Anselm College. Dan Innis withdrew from the race and endorsed Sununu, further consolidating support, while Chris Sununu has not entered the contest. With the primary scheduled for September 8, 2026, the current market pricing reflects these polling trends and resource advantages ahead of the general election matchup against Democratic Representative Chris Pappas.