Rebecca Cooke leads the WI-03 race with an 86.5% implied probability because recent nonpartisan forecasts shifted the contest toward her after Democratic targeting and late-October polling trends. Multiple raters, including the Cook Political Report and Sabato’s Crystal Ball, moved the rematch from toss-up to lean Democratic following Cooke’s consistent fundraising edge of roughly $12.7 million to Van Orden’s $9.1 million and her performance in a district that voted for Trump by seven points in 2024. Incumbent Van Orden’s alignment with the Trump administration on tariffs, immigration, and foreign policy has drawn Democratic attacks in a midterm environment where turnout patterns typically favor the opposition party. Traders appear to weigh these structural and financial factors alongside the absence of late Republican momentum ahead of the November 3 general election.