Democrat Jon Ossoff beat Republican David Perdue in one of Georgia’s two Senate runoffs, NBC News projected Wednesday, sealing his party’s control of Congress and the White House.

The projection in the race came as rioters backing President Donald Trump stormed the Capitol building after he urged supporters at a rally to march to Congress. The attack on the legislature delayed the formal Electoral College count — which dozens of Republicans challenged at Trump’s insistence — as lawmakers evacuated the building.

The Democratic Party will take control of Congress for the first time in a decade, after Democrats the Rev. Raphael Warnock and Jon Ossoff won their Senate runoffs in Georgia, CNN projected Wednesday.

The election results have provoked whiplash in Washington, which saw Republicans in November make gains in the House and hold onto Senate control.

But now Georgia gives President-elect Joe Biden the power to push through Cabinet nominations without Republican support and potentially enact sweeping, liberal legislation.

Democrat Jon Ossoff defeated Republican former Sen. David Perdue in a bitterly contentious Senate race in Georgia, a win that along with Rev. Raphael Warnock's defeat of GOP Sen. Kelly Loeffler secures the Democrats' control in the upper chamber of Congress, Fox News projected Wednesday.

Ossoff, a 33-year-old media executive, won a runoff election against Perdue, the one-term senator and former Fortune 500 CEO, who at 71 is more than twice Ossoff's age. The November Election Day result failed to give either candidate a majority, forcing Tuesday's rematch.

Democrat Raphael Warnock won one of Georgia’s two Senate runoffs Wednesday, becoming the first Black senator in his state’s history and putting the Senate majority within the party’s reach.

A pastor who spent the past 15 years leading the Atlanta church where Martin Luther King Jr. preached, Warnock defeated Republican incumbent Kelly Loeffler. It was a stinging rebuke of outgoing President Donald Trump, who made one of his final trips in office to Georgia to rally his loyal base behind the state’s Republican candidates.

Democrats closed in on control of the U.S. Senate early Wednesday with a stunning come-from-behind victory in one of Georgia's twin runoff elections and the lead in the second contest, races that could reshape the first two years of President-elect Joe Biden's term by giving Democrats a clearer path to enacting their legislative priorities.

With Democrats projected to win at least one of the two Georgia Senate runoff races, they are inching closer to keeping Republicans from holding on to control of the upper body of Congress.

Democrat Raphael Warnock is projected to defeat Sen. Kelly Loeffler, R-Ga., according to Fox News' Decision Desk early Wednesday.

The focus now shifts to the second race between Sen. David Perdue and Democrat Jon Ossoff, who are locked in a tight race.

Here are some key takeaways after Tuesday's election:

1. Senate control for Democrats is within reach