Incumbent Republican Tom Cotton secured reelection in the Arkansas U.S. Senate race on November 3, 2026, with partial results showing approximately 54 percent of the vote against Democrat Hallie Shoffner’s 42 percent and Libertarian Jeff Wadlin’s share near 3 percent, producing an 11-to-12-point margin. Arkansas’s long-standing Republican lean, reinforced by prior statewide results and a “Solid R” rating from forecasters, aligned with polling averages that placed Cotton ahead by 9 to 16 points through late October. Shoffner’s campaign highlighted economic pressures on farmers from tariffs, yet fundraising and voter turnout patterns favored the incumbent. With nearly all votes counted, the current tally supports the market’s leading 10-15 percent Republican margin outcome while leaving limited room for late shifts in remaining precincts.