Incumbent Democrat Betty McCollum faces Republican Paul Wikstrom in Minnesota’s 4th congressional district on November 3, 2026. The district’s D+18 Partisan Voter Index and consistent Democratic performance in recent cycles underpin trader consensus around sizable Democratic margins, with probabilities concentrated in the 40-55 point range. McCollum’s long tenure and primary victory over challenger Aswar Rahman, paired with Wikstrom’s nomination after defeating rivals in the Republican primary, have produced little movement since August. Limited district-specific polling and the absence of major late-cycle developments keep the exact margin bucket contested among traders. Turnout patterns in St. Paul suburbs, any national midterm shifts, or unexpected campaign events could still adjust the final spread before election day.