Virginia voters have narrowly approved a referendum to redraw the state’s congressional map, with about 51.5 percent voting yes and 48.6 percent voting no, and 97 percent of ballots counted, according to The Associated Press news agency.

The map redraws the boundaries of Virginia’s congressional districts, changes that can directly shape which party wins seats in the United States House of Representatives.

With most votes counted, the result remained close, but Democratic-leaning areas helped push it through.

The vote is part of a broader national fight over district lines – a battle that could decide who controls Congress.

Republicans in Florida, for instance, are planning a special session of the state legislature next Tuesday where they are expected to seek to redraw their state’s political map – a move that could help them gain as many as five seats, potentially wiping out any Democratic gain in Virginia.

Here are five key takeaways:

Democrats gain a major advantage in the House race

Currently, Virginia sends 11 members to the US House. At the moment, they comprise six Democrats and five Republicans.

The new map changes how those seats are drawn. By reshaping district boundaries, it makes most areas more favourable to Democrats by clumping together voters who lean towards the party strategically, while splintering communities that typically vote Republican.

• Eight districts would be safely Democratic
• Two would be competitive but lean Democratic
• Only one would be safely Republican.

Because of this, Democrats could realistically win at least eight and possibly up to 10 of the 11 seats in the US house, instead of just six.

This shift follows a high-stakes political battle, with total spending estimated at $100m.

Democratic leaders, including Virginia Governor Abigail Spanberger, framed the new map as a direct response to efforts by US President Donald Trump and Republicans to redraw districts in their favour in other states.

However, even with this win, “there’s no guarantee they’ll send a delegation dominated by Democrats to Washington,” Al Jazeera’s Rosiland Jordan said, reporting from Virginia.

There are still six months until the midterm elections, and voter behaviour can shift. Even favourable maps can produce unexpected outcomes.

Virginia is one part of a bigger battle

Virginia is just one part of a bigger fight over who controls the US House.

After the 2024 election, Trump pushed Republican-led states to redraw congressional maps before the usual timeline to improve their chances in the 2026 midterms.

Republicans moved first in states like Texas, where new maps could give them up to five more seats.

Democrats responded with their own moves. In California, voters approved a plan backed by Governor Gavin Newsom that allowed lawmakers to draw a new, more partisan map. This is expected to give Democrats up to five extra seats.

The Virginia result fits into this bigger picture. If Democrats gain up to four seats there, it could help cancel out Republican gains in other states.

But the fight is not over. More changes could still happen, including in Florida, where Governor Ron DeSantis is looking at redrawing the map.

“Virginia just changed the trajectory of the 2026 midterms,” Democratic state House Speaker Don Scott said in a celebratory statement.

“At a moment when Trump and his allies are trying to lock in power before voters have a say, Virginians stepped up and levelled the playing field for the entire country.”

Legal challenges could still overturn the result

The measure has been approved by voters, but its future is still uncertain.

The Supreme Court of Virginia is expected to review ongoing legal challenges that could affect whether the new map takes effect. While the court allowed the vote to go ahead, it said it would examine the case in full if the measure passed.

The challenges focus on two key issues: Whether Democratic lawmakers followed the correct legal process when putting the proposal forward, and whether the wording on the ballot may have been misleading to voters.

A narrow win

Both parties were watching the vote closely.

Democrats were happy to win, even if it was close. Republicans, meanwhile, were relieved it wasn’t a big loss.

“Virginia Democrats can’t redraw reality,” said Republican Congressman Richard Hudson. “This close margin reinforces that Virginia is a purple state that shouldn’t be represented by a severe partisan gerrymander.”

Gerrymandering is the process of redrawing electoral maps in ways that can benefit one party over another.

Democrats said the tight result was partly down to voter confusion, which they blamed on Republican messaging. Democrats framed the effort as a response to Trump, promoting the plan with advertisements featuring former US President Barack Obama.

Opponents pushed back by pointing to past comments from Obama and Spanberger, both of whom have previously criticised gerrymandering, using that to question the Democrats’ position.

Gerrymandering is at the centre of the fight

The vote highlights the growing importance of partisan map-drawing in US politics.

Democrats say this balances Republican advantages elsewhere. Republicans call it a power grab in a competitive state.

Either way, redistricting is now a key tool shaping election outcomes, not just reflecting them.