Georgia Democrats made sweeping gains in Tuesday’s General Election, winning every statewide office on the ballot, taking control of the Georgia House of Representatives for the first time in more than two decades and narrowing the Republican majority in the state Senate.

The election represents one of the most significant changes in Georgia’s political leadership since Republicans began taking control of statewide offices in the early 2000s.

Former Atlanta Mayor Keisha Lance Bottoms defeated Republican Rick Jackson in the governor’s race, becoming the first Democrat elected Georgia governor since Roy Barnes won reelection in 1998. Bottoms will also become the first Black woman elected governor in United States history.

Democratic U.S. Senator Jon Ossoff won reelection over Republican Congressman Mike Collins, securing another six-year term in Washington.

Democrats also captured all seven other statewide constitutional offices on Tuesday’s ballot.

Josh McLaurin defeated Republican Greg Dolezal for lieutenant governor, giving Democrats control of the office that presides over the Georgia Senate for the first time since 2007.

Tanya Miller defeated Republican Brian Strickland for attorney general, while Penny Brown Reynolds defeated Republican Tim Fleming for secretary of state.

Democrats also defeated Republican incumbents in four additional statewide races.

Katherine Juhan-Arnold defeated Agriculture Commissioner Tyler Harper. Keisha Sean Waites defeated Insurance Commissioner John King. Nikki Porcher defeated Labor Commissioner Bárbara Rivera Holmes, and Lydia Powell defeated State School Superintendent Richard Woods.

The Democratic victories extend beyond the executive branch.

In the Georgia House of Representatives, Democrats defeated at least 12 Republican incumbents and achieved a net gain of at least 10 seats, enough to secure a majority in the 180-member chamber. Republicans have controlled the House since 2005.

House Democratic Leader Carolyn Hugley of Columbus is positioned to become the chamber’s next speaker when the Legislature convenes in January.

Democrats also made gains in the Georgia Senate, defeating Republican incumbents Clint Dixon, Shawn Still and Ed Setzler. Republicans retained their Senate majority, although their advantage narrowed.

The results will create divided control of the Legislature, with Democrats holding the House and Republicans controlling the Senate. Democratic Lieutenant Governor-elect Josh McLaurin will preside over the Republican-controlled Senate.

Democrats also secured control of the Georgia Public Service Commission, the five-member body that regulates utilities including Georgia Power. The change follows Democratic victories in commission elections and gives the party control of the regulatory board for the first time in decades.

The election also marked several historic firsts. In addition to Bottoms becoming the nation’s first elected Black woman governor, Tanya Miller will become Georgia’s first female attorney general, and Penny Brown Reynolds will become the first Black person elected Georgia secretary of state.

Lydia Powell will become the first Black woman to serve as Georgia’s state school superintendent.

Despite the statewide Democratic victories, Republicans continued to win many individual legislative and local races, including contests in heavily Republican areas of Northwest Georgia.

The new governor, statewide constitutional officers and members of the General Assembly are scheduled to take office in January.

Election results remain unofficial until certification is completed.