7:10 p.m.

Joe Biden has notched his first major Super Tuesday victory, winning Virginia to start the most pivotal night of the Democratic presidential primary, according to the Associated Press.

Less than one percent of Virginia's precincts have reported results after polls closed at 7 p.m., but the AP made its decision based on exit polls.

Voting was still occurring Tuesday in the two biggest delegate prizes of the night, Texas and California.

You can track the latest real-time results as they're reported at

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Virginia was a lift for Biden after Sanders and former New York Mayor Mike Bloomberg heavily contested it over the past week.

The commonwealth has 99 delegates at stake.

It has been considered a tossup state that has increasingly moved to the left over recent years.

The results of the primary in Virginia, with its diverse electoral terrain of rural, urban, and suburban voters, could be a key indicator of which Democrat will be chosen to face President Donald Trump in the general election.

Over the past week, multiple Virginia officials, including Senator Tim Kaine and former Governor Terry McAuliffe, have endorsed Biden, making a once-jumbled race increasingly well-defined.

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The results of the Democratic primary in Virginia - with its diverse electoral terrain of rural, urban, and suburban voters - could be a key indicator of which Democrat will be chosen to face President Donald Trump in the general election.

The Old Dominion is one of 14 states voting in what's known as the “Super Tuesday” Democratic primary. Other major states voting include California, Texas and North Carolina.

Virginia represents an important test for many Democratic hopefuls, including Former Vice President Joe Biden, Vermont Sen. Bernie Sanders, and former New York City Mayor Michael Bloomberg.

Here's a guide to Election Day:

THE STAKES

Virginia is America in miniature with diverse voting blocs, a mix of rural, urban and suburban areas, and many veteran voters.

Once a key swing state, Democrats have won every statewide election in Virginia for the last decade, while also flipping partisan majorities in the state legislature and the congressional delegation. Voter antipathy toward Trump, particularly in the state’s fast-growing suburbs, have helped fuel that shift.

Virginia is not currently a priority for Trump's reelection campaign, but there is concern among Democrats that if Sanders is his opponent, it will threaten down-ballot races. Still, Virginia is among the few states on Super Tuesday that are considered possibly competitive in the fall.

CANDIDATES TO WATCH

Biden will be counting on Virginia's suburban and African American voters to help keep his momentum going after a convincing win in South Carolina on Saturday. Many of the state's top Democrats have endorsed him, including top African American officials.

Bloomberg has been a regular visitor to Virginia, and launched his race here. He's spent millions of dollars helping elect Democrats in Virginia and spent lavishly on campaign staff and advertising,

Sanders doesn't need to win Virginia to have a good day on Super Tuesday. But weak results here may reinforce fears from many in his own party's establishment that Sanders will struggle to win over legions of centrists he'll likely need against Trump.

A surprise showing in Virginia by Massachusetts Sen. Elizabeth Warren could be a much-needed boost to her campaign.

KEY DETAILS

Virginia doesn't register voters by party and the primary is open to anyone registered to vote. Virginia Republicans plan to pick Trump as their party's nominee later this year at a party convention.

Polls will be open from 6 a.m. to 7 p.m. Each voter will need to bring a photo ID.

Anyone not already registered won’t be able to vote. Virginia doesn’t allow same-day registration.