The uncompetitive Arkansas Senate race between incumbent Republican Tom Cotton and Democrat Hallie Shoffner drives trader consensus toward the 900K-975K turnout band at 68.5% implied probability. Polls through early October show Cotton leading by 7-11 points in a contest rated solid Republican by forecasters, producing limited statewide mobilization compared with the 2022 Senate election that recorded roughly 873,000 total votes. Midterm voter fatigue, Arkansas's below-average historical participation rates, and the absence of recent high-profile catalysts or ballot measures keep expectations anchored near that prior benchmark, with higher or lower bands trading at single-digit shares. Early voting runs through November 2 ahead of the November 3 general election.