The American midterms will help shape both US political parties by signaling to Washington insiders who might credibly claim their future direction. Politicians, donors, activists, and influential media figures will read the results for clues about which candidates and messages can win in 2028. Consider two scenarios.
A substantial Democratic victory -- a sizable House majority and control of the Senate -- would be widely interpreted as a repudiation of Donald Trump. His brand of populism would face more challenges within the Republican Party, but would remain central to its identity.
Democrats would gain both institutional leverage and confidence to confront the administration. They could investigate allegations of corruption and incompetence, challenge spending priorities, and scrutinize foreign policy. Senate control would give them additional power to block nominees to senior government positions and the federal courts. Trump would retain considerable executive authority, but face greater constraints and public scrutiny.
A wave could also widen the Democratic presidential field. Candidates from different parts of the party coalition would claim that their approach could capitalize on the backlash to Trump. You would see a range of Democrats, from the more moderate wing to democratic socialist, Alexandria Ocasio-Cortes (AOC), seeking to run for the Democratic nomination.
For Republicans, defeat would sharpen a question: does the party want a Trumpian heir or greater distance from him? Vice President JD Vance will seek to inherit the MAGA mantle. Secretary of State Marco Rubio could offer a more conventional Republican approach while retaining strong populist elements. Neither would simply restore the party of George W. Bush -- that is gone. Nor is it clear that either has Trump’s remarkable ability to mobilize otherwise disengaged voters who helped defeat Democrats in two presidential elections.
Now consider a narrower Democratic victory. This would mean a small House majority while Republicans retain the Senate.
That would impose meaningful checks on Trump without delivering a powerful verdict on his political movement. Domestic policymaking would likely remain stalemated, encouraging him to concentrate on executive action, foreign affairs and his favorite building projects around Washington.
Democrats, meanwhile, might become more cautious about 2028. An inconclusive result would strengthen demands for a nominee who can reassure uncertain voters and win closely divided states. Younger figures in "swing" states, such as Pennsylvania Governor Josh Shapiro or Georgia Senator Jon Ossoff could benefit from that narrative, should they run. Progressives would remain highly influential on policies, but enthusiasm within the activist base would not necessarily translate into a presidential nomination from their own kind, particularly not a woman after the losses of Hillary Clinton and Kamala Harris.
For Lebanon and the wider region, the stakes extend beyond who succeeds Trump. A Republican departure from Trump’s governing style would not necessarily end the "America First" approach to the party's foreign policy. A Democratic return to the presidency would mean greater multilateralism and an effort to rebuild frayed alliances. The party's previous consensus on Israel is clearly shattered. Democratic voters have become substantially more critical of Israel, creating pressure on presidential aspirants to reconsider the terms of American support.
The midterms will settle neither party’s future but will define some likely paths. They will give politicians, donors, activists, and media figures ammunition for competing arguments about what voters want and who can win in 2028. Those interpretations may be selective or mistaken. But they will nonetheless shape which candidates attract support, which messages gain traction, and who feels emboldened to remake the party in their image.
By Raymond La Raja, Professor in the Department of Political Science
