Mike Simpson's long incumbency since 1999 and consistent primary victories, most recently securing 63.3% in the May 2026 Republican primary, anchor trader consensus on his strong position in Idaho's 2nd Congressional District. The seat's eastern and rural Republican lean, combined with Simpson's fundraising edge exceeding $1.1 million against Ellie Gilbreath's under $110,000, sustains the implied probability near 96%. All major forecasters rate the race Solid or Safe Republican ahead of the November 3 general election. Factors that could still shift outcomes include late-breaking scandals, health developments, or an unanticipated national partisan wave, though no such events have emerged in recent months.