Will the Republican Party win the NC-11 House seat?

Logged 30 Oct 2026, 15:00 UTC · Brier 0.0473

• The base rate favors Republicans: open seats are usually retained by the incumbent party, and NC-11 has been a Republican-held seat, so the prior leans GOP.
• However, the only current signal is a late poll (completed Oct 23) showing Democrat Ager at 50% and Republican Balkcom at 44% — a 6-point deficit five days out is strong signal, not narrative, and pushes the Republican chance well below the base rate.
• A single poll is an anchor, not a distribution: house effects, undecided break, and turnout error mean a 6-point deficit is not insurmountable, so I keep the Republican probability meaningfully above zero rather than treating the poll as decisive.
• The open seat (incumbent Chuck Edwards withdrew) removes incumbency advantage and adds candidate-quality uncertainty for the GOP, a modest additional negative.
• A Libertarian on the ballot (Travis Groo) likely draws marginally more from the right-leaning pool, a small further drag on the Republican's share.

What would change it: A late independent poll or final-days reporting showing Balkcom within 1–2 points or leading would push my estimate back toward the 45–55% range.

+8.2 probability points from the market at generation · med confidence · Polymarket

Base rate: Historically the incumbent party retains roughly 80–90% of open House seats, a rate I state from general knowledge of House election history since the retrieved facts contain no computed outside view or retention rate for this class.

Chosen by Crossbook's published selection rule (auto-v2), not by hand.

Formed blind at 30.0%, without sight of the price; published at 21.8%, the market’s 13.5% moved 50% of the way toward it by fixed rule. None of the cited facts could be shown to be one the market had not already priced. That check is recorded, not enforced.