Control of Congress still hangs in the balance as of Wednesday afternoon, as some competitive House contests remain uncalled and three Senate races are outstanding.

The big picture: Republicans are leading the race for control of the House, but a number of toss-ups are still up for grabs. The razor-thin battle for control of the Senate has winnowed to three key races — Arizona, Georgia and Nevada.

The midterm elections did not go the way many were expecting, and there are several races that have yet to be called.

Many were expecting a red wave on Tuesday night, though it failed to materialize, and the Democrats ended up performing better than expected. However, for many races, the election is ongoing, and the winners of said races may take some time before being declared.

The morning after Election Day in the 2022 midterms, control of the Senate remains a toss-up. As of Wednesday afternoon, Democrats had secured 48 seats and Republicans had 49 seats, with four races yet to be called, CBS News projects.

The Georgia race will go to a runoff in December between Sen. Raphael Warnock and Republican challenger Herschel Walker, after neither cleared 50%. CBS News characterizes Nevada as a toss-up, and Arizona as leaning Democrat. 

The five most expensive Senate races of 2022 have seen nearly $1.3 billion in spending across the primary and general elections, according to OpenSecrets, a staggering sum that speaks to the massive amounts of money flooding the political system.

Leading the way is the Pennsylvania Senate race, where Democratic Lt. Gov. John Fetterman and Republican Dr. Mehmet Oz are squaring off in the general election. All told, nearly $375 million has been spent on the race this cycle, OpenSecrets found.

Pennsylvania Lt. Gov. John Fetterman and celebrity doctor Mehmet Oz are locked in a tight race for a U.S Senate seat that could determine which party controls that chamber in 2023.

Multiple polls show Fetterman, a Democrat, and Oz, a Republican, neck and neck in a heated battle for the seat held by retiring Republican Sen. Pat Toomey. Observers rate the race a toss-up.

Both candidates brought in heavy hitters to boost their chances in the final weekend before the Nov. 8 election.

Election Day is Tuesday, but with early voting, the more accepted use of mail voting and the prospect of razor-thin races, it's really Election Season.

And Tuesday only marks the beginning of the next phase in that season.

Gird for many of these elections to go on for days, if not weeks. This is all perfectly normal when there are close elections. It doesn't mean that there is fraud — despite the lies about his 2020 loss that former President Donald Trump has pushed and so many candidates he's backed have promulgated.

When are we going to know the results of the midterms? In 2020, due to slow vote counting in many states, it took days — until Saturday, Nov. 7 — for ABC News to declare Joe Biden the president-elect. We likely won’t have to wait that long this year, but it is again possible that we won’t know the winners of the 2022 election on election night. States like Arizona, Nevada and Pennsylvania that are key to Senate control could take multiple days to count all their votes.

Voters won’t immediately know the results of the 2022 midterm elections , with some of the most consequential races not expected to be called for days — maybe even weeks.

The fate of both the House and Senate for the next two years will be decided after the polls close on Tuesday. However, a number of factors could delay how long until voters and candidates know the results of their races, especially for those in key battleground states that are set to determine which party will gain control of Congress.