The battle for control of the United States Congress has entered a critical phase as primary elections unfold across the country, shaping the political landscape for the second half of President Donald Trump’s term. According to tracking data and projections from NBC News, both major parties are mobilizing voters around key economic issues and sentiment toward the administration ahead of the general election on November 3, 2026.
Currently, Republicans are working to defend and expand their narrow majorities in both the Senate and the House of Representatives. To wrest control of the Senate, Democrats face a steep mathematical challenge: they require a net gain of four seats. This path requires the Democratic Party to successfully defend every seat it currently holds while flipping four highly competitive or traditionally Republican-leaning seats.
The primaries serve as a crucial testing ground for voter sentiment, particularly regarding the state of the economy and the public’s view of President Trump’s policies. Vote data is being collected across all 50 states for statewide offices, the House of Representatives, governorships, and key ballot initiatives.
To ensure accuracy in projecting these high-stakes races, major news organizations, including NBC News, are relying on real-time election results provided by the Associated Press (AP). Projections are made through rigorous analysis by decision desks, which declare winners only when trailing candidates have no statistical path to victory. This systematic counting process relies on rolling reports from county- and precinct-level officials, alongside official state feeds, to verify results against historical voting patterns. The outcomes of these primary contests will finalize the candidate matchups for the critical November midterms, which will ultimately decide the legislative trajectory for the remainder of the presidential term.