More than a dozen House and Senate races remain undecided one week after Election Day

One week after Election Day, more than a dozen contests that could determine party control of Congress were still too early to call, leaving the final size of Democrats’ majorities in the House and Senate unresolved, according to multiple election-roundup reports published Tuesday.

The continuing uncertainty reflects the pace of vote tabulation and certification across jurisdictions, where additional mail ballots, provisional ballots, and late-arriving returns can extend the timeline for final results in close races.

Several outlets reported that while some races had been called, a remaining set of key elections had not reached the thresholds needed for news organizations to make a call, keeping control calculations incomplete in both chambers.

For lawmakers and election administrators, the practical effect of undecided races is that committee assignments, leadership negotiations, and the start-to-finish legislative calendar can remain in flux until results are finalized and certifications are completed.

The delay also affects how quickly candidates can seek formal review if disputes arise, since the availability of recounts or contested-case procedures often hinges on the timing of certified results rather than initial tallies.

As ballots continue to be processed, the House and Senate remain in a state of partial uncertainty, with further updates expected as remaining precinct totals are reported and states finalize official certification deadlines.