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Democrats lead the Senate counts in South Carolina and Ohio, with NBC News rating both races as leaning Democratic.
In South Carolina, Annie Andrews had 51.2% against Darline Graham's 46.7%, with 82% of the expected vote reported.
In Ohio's special election, Sherrod Brown led Jon Husted 49.3% to 46.2%, with 60.4% of the expected vote in.
Both seats are held by Republicans. Graham was appointed after the death of her brother, Sen. Lindsey Graham, in July. Husted was appointed in 2025 to the seat JD Vance left to become vice president.
S&P 500 futures have extended their loss past 1%, falling 1.02% to 7,519.50 at 02:34 UTC. Nasdaq-100 futures were down 1.83% at 27,787.25, and Dow futures fell 0.66% to 51,555.00.
Bitcoin traded at $76,599.51, down 0.95%. The U.S. Dollar Index was 0.50% lower at 101.376.
Gold gained 0.30% to $3,941.79 per troy ounce, while silver fell 0.79% to $49.388 an ounce.
WTI crude was down 0.79% at $95.33 a barrel. Brent fell 0.55% to $103.03.
Democratic Rep. Vicente Gonzalez has won reelection in Texas's 34th Congressional District, defeating Republican Eric Flores, NBC News projects.
Democrats have also held Florida's 25th District, where Rep. Jared Moskowitz has defeated Republican Scott Singer. Both seats were on the network's list of House battlegrounds.
Democratic Gov. Kathy Hochul has won reelection in New York against Republican Bruce Blakeman, NBC News projects.
New York City Mayor Zohran Mamdani was speaking at an election watch party in Manhattan when the Associated Press called Hochul's race. He urged Democrats to turn their gains into results for voters:
"Together we have an opportunity, my friends, to prove that Democrats can deliver. To provide an alternative to the hollow promises and the lasting betrayals of the right."
Mamdani also said:
"The work that we began here on the streets of New York City is being carried forward tonight all across our country."
Republican Shelley Moore Capito has won a third consecutive Senate term in West Virginia, defeating Democrat Rachel Fetty Anderson. She is the first West Virginia Republican elected to three straight Senate terms in more than a century, the Associated Press reports.
NBC's Senate tally stood at 45 seats on the Democratic side and 35 for Republicans at 02:22 UTC, including seats not up for election.
The House count was 84 seats called for Democrats and 40 for Republicans. A majority requires 218 seats.
Former White House press secretary Karoline Leavitt says Trump remains upbeat about the election count after speaking with him.
Appearing on Fox News' election coverage, she said:
"I just talked to the president. He remains cautiously optimistic."
Leavitt also said she was in contact with friends working in the White House's election-night war room and that they were focused on votes cast on Election Day.
She described Trump's view of his campaign effort this way:
"One thing he said is he left it all on the field and that is certainly true."
Leavitt acknowledged that the historical pattern in midterm elections was working against the president's party.
Bitcoin has fallen back below $77,000, trading at $76,701.09 at 02:23 UTC, down 0.81% on the day.
Nasdaq-100 futures were down 1.69% at 27,828.75, while S&P 500 futures fell 0.87% to 7,530.50. Dow futures were 0.52% lower at 51,626.00.
Gold rose 0.28% to $3,940.88 per troy ounce, while silver was down 0.73% at $49.42 an ounce.
WTI crude fell 0.72% to $95.40 a barrel. Brent was down 0.44% at $103.14.
Trump is watching election returns with Cabinet members and political advisers in the East Room of the White House, according to a White House account reported by the Associated Press.
On Truth Social, the president complained that Fox News was giving Democrats too much coverage. He blamed what he called falling ratings on the network's treatment of him.
Trump wrote in a post:
"They’re way down, not because of me, but because they are AGAINST me!"
Interior Secretary Doug Burgum said earlier Tuesday that he planned to attend the White House reception.
Bitcoin has moved back above $77,000, trading at $77,036.05 at 02:08 UTC, down 0.38% on the day.
U.S. equity futures remain lower. Nasdaq-100 futures were down 1.51% at 27,877.25, S&P 500 futures fell 0.70% to 7,543.25, and Dow futures were off 0.33% at 51,724.00.
WTI crude traded at $95.56 a barrel, down 0.55%, while Brent was at $103.32, down 0.27%.
Gold was up 0.22% at $3,938.66 per troy ounce; silver fell 0.28% to $49.644 an ounce.
Democrat Jamie Ager has flipped North Carolina's 11th Congressional District, defeating Republican Jennifer Balkcom, NBC News projects. The seat was left open after Republican Rep. Chuck Edwards decided not to seek reelection.
The win gives Democrats their first House pickup on NBC's tracker. They need a net gain of three seats to take control of the chamber.
At 02:05 UTC, the network had called 74 House seats for Democrats and 32 for Republicans. The Senate tally stood at 45 seats on the Democratic side of the Senate and 34 for Republicans, including seats not on this year's ballot.
Keisha Lance Bottoms has won Georgia's governor's race, NBC News projects, flipping the office to Democrats for the first time in 24 years.
The former Atlanta mayor defeated Republican Rick Jackson and will succeed term-limited Republican Gov. Brian Kemp. She is the first woman and the first Black person elected governor of Georgia.
Jackson, a wealthy healthcare executive, put more than $100 million of his own money into the campaign, according to the network's reporting. Bottoms campaigned heavily on affordability and economic issues, and attacked his support for data-center construction.
Bottoms served as Atlanta's mayor from 2018 to 2022 and later worked in the Biden administration.
Democrats have held two more Senate seats: John Hickenlooper has won reelection in Colorado against Republican Mark Baisley, and Ben Ray Lujan has won in New Mexico against Republican Larry Marker, NBC News projects.
Republican Ashley Moody has also won Florida's special Senate election against Democrat Angie Nixon. Moody will serve the final two years of the term Marco Rubio won in 2022; the seat returns to the ballot for a full term in 2028.
NBC's results tracker showed 45 seats on the Democratic side and 34 for Republicans at 02:03 UTC, including seats not up for election. Democrats had gained one Senate seat on net.
The House tally showed 69 House seats called for Democrats and 32 for Republicans. The House majority threshold is 218.
Illinois Gov. JB Pritzker has won a third term, defeating Republican Darren Bailey. He is the first Democrat elected to three terms as governor of the state.
Pritzker told supporters:
"It looks like maybe, just maybe, something is stirring in the conscience of America."
NBC News projects Pritzker as the winner. Bailey, his Republican opponent, is a former state lawmaker.
Pritzker is considered a potential Democratic presidential candidate for 2028, the Associated Press reports. His victory gives him another term in office as the party looks beyond this year's fight for Congress.
At 01:58 UTC, Nasdaq-100 futures were down 1.62% at 27,848.50, while S&P 500 futures fell 0.80% to 7,535.75. Dow futures were 0.40% lower at 51,690.00.
Gold was up 0.43% at $3,946.86 per troy ounce. Silver traded at $49.707 an ounce, down 0.15%.
WTI crude fell 0.45% to $95.66 a barrel, while Brent was down 0.21% at $103.38.
Bitcoin traded at $76,852.97, down 0.62%. The U.S. Dollar Index slipped 0.47% to 101.409.
Democrat Chris Pappas has won New Hampshire's Senate race, keeping the seat being vacated by retiring Democrat Jeanne Shaheen in his party's hands. NBC News projects Pappas as the winner over former Republican Sen. John Sununu.
Sununu has conceded. He told supporters:
"This has been an incredible campaign, but it is not our night. I called Chris to congratulate him a few minutes ago."
Pappas, a four-term House member, blocks another Republican opportunity to pick up a Democratic-held Senate seat. He also becomes the first openly gay man elected to the U.S. Senate.
At 01:54 UTC, NBC's Senate tally stood at 43 seats on the Democratic side and 33 for Republicans, including seats not up for election. The House tally was 60 Democratic seats and 28 Republican seats; 218 are needed for a majority.
Wall Street finished election day with the Nasdaq Composite up 0.83% at 25,372.01 and the S&P 500 up 0.36% at 7,568.92. The Dow fell 0.38% to 51,786.72.
Control of Congress will shape the next round of tax and spending legislation. A Democratic majority in either chamber would give the party more power over committees and investigations during the final two years of Trump's term.
Both chambers also have to agree on legislation before it reaches the president. A change in congressional control would alter those negotiations, while a Senate majority would give Democrats control of the chamber that votes on executive and judicial nominees.
Democrats have flipped North Carolina's open Senate seat, with former Gov. Roy Cooper defeating Republican Michael Whatley, according to an Associated Press race call reported by NPR. The seat is being vacated by Republican Thom Tillis, making this a pickup rather than a Democratic hold.
Georgia Sen. Jon Ossoff has also won reelection against Republican Mike Collins. In Illinois, Democrat Juliana Stratton has won her Senate race.
The AP's rolling coverage confirms the Georgia and Illinois victories. Cooper's win is detailed in NPR's report.
North Carolina gives Democrats one of the net gains they need to take the Senate. Holding Georgia also blocks a Republican opportunity to offset those gains. The party needs a net pickup of four Senate seats to win control, according to AP.