Here’s a summary of the big events of election day and the undecided races we are still closely watching.

In the House, Democrats secured the 218 seats needed to regain control.
Democrats won Republican-held seats in Colorado, Florida, Kansas, Minnesota, New York, Pennsylvania and Virginia.
In the Senate, Republicans have expanded their majority, and Trump declared the night a “tremendous success”.
Missouri Democratic senator Claire McCaskill lost to a Republican challenger.
A Republican also ousted senator Joe Donnelly, Indiana’s only Democratic statewide officeholder.
Texas Senate candidate Beto O’Rourke, who became a Democratic superstar this election, narrowly lost in his race to unseat Ted Cruz.
Republican senator Dean Heller also lost his seat in Nevada to a Democratic challenger.
In the governor’s races, Democrats gained seven new seats.
Wisconsin governor Scott Walker, an influential Republican, lost his seat to a Democratic challenger.
Andrew Gillum, Democratic candidate for governor in Florida, lost to Republican Ron DeSantis.
The governor’s race in Georgia was too close to call, with Democrat Stacey Abrams saying she would not concede to Republican Brian Kemp, the state’s secretary of state. It could result in a runoff.
A record number of women won races across the country, and candidates of color and LGBT people have also broken barriers.
Voters passed ballot measures across the country with new laws on voting rights, marijuana, taxes and more.
Updated at 6.29am EST
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1h ago
05:58
Possible runoff in Georgia
Stacey Abrams’ campaign has sent out an update about the possibility of a runoff in the Georgia governor’s race, where she is trailing behind Republican Brian Kemp, but tens of thousands of votes have yet to be counted. Some key facts from the Democratic candidate:

As of 4am local time, there was a difference of 85,167 votes separating Kemp and Abrams, which represents just over 2% of votes cast.
To trigger a runoff, the Abrams campaign needs to net 24,379 votes out of the tens of thousands of potential ballots that remain outstanding.
Three of the four largest counties in the state – DeKalb, Gwinnett, and Cobb – have reported only a portion of the votes that were submitted by early mail. In Cobb, anywhere between 25,000 and 26,000 votes were submitted early by mail.
Four other large counties – Chatham, Henry, Douglas, and Clarke – have reported zero votes by mail.
Together, those seven counties are expected to return a minimum of 77,000 ballots. These counties also represent heavily-Democratic leaning constituencies.
Earlier in the night, Kemp said the “math is on our side to win”