Massachusetts’s 6th Congressional District carries a Cook Partisan Voter Index of D+11 and has been held by Democrats for decades, producing consistent double-digit margins in recent cycles. The seat opened when incumbent Seth Moulton pursued a Senate bid, prompting a crowded Democratic primary won by Dan Koh on September 1. Koh now faces Republican Micah Jones, who ran unopposed, in the November 3 general election. Forecasters across Cook, Inside Elections, and Sabato’s Crystal Ball rate the contest Solid or Safe Democratic. Trader pricing reflects this structural advantage and the absence of any recent polling or events that would narrow the gap. A major scandal involving the Democratic nominee, an unexpected national Republican surge, or unusually depressed Democratic turnout could theoretically alter the outcome, though historical patterns in the district make such shifts improbable.