Senate Republicans hold a slim majority but have repeatedly declined to invoke the nuclear option to eliminate the legislative filibuster, despite repeated calls from President Trump during 2025 government funding disputes and stalled priorities such as voter ID measures. Majority Leader John Thune and multiple senators including Lisa Murkowski and John Curtis have cited long-term risks to minority rights and institutional precedent when control shifts, noting that only targeted precedent changes for nominations occurred in 2025. A core group of at least a dozen GOP senators publicly opposes broader rule changes, leaving insufficient support for a simple-majority precedent that would lower the 60-vote threshold for most bills. Upcoming 2026 Senate primaries and any renewed appropriations fights could test whether additional members shift, though current caucus math continues to anchor trader assessments of low likelihood for full legislative filibuster reform this term.