Virginia voters have approved a redistricting measure that could help Democrats in their bid to win control of the thinly divided US House of Representatives in the midterm elections later this year.
The ballot measure will redraw the state's congressional map, and could allow Democrats to win as many as four House seats that are currently held by Republicans.
The state is the latest in a national redistricting arms race that began after President Donald Trump urged conservative states to re-examine voting maps to help Republicans keep the party's slim congressional majority.
The midterms, which will decide who controls Congress, will take place in November.
Each of these newly-drawn districts could have a role in deciding which political party takes the House, or lower chamber of Congress.
Historically, the party of the sitting president tends to lose House seats during the midterms. If Democrats win the House in this November's contest race, it will not only serve a blow to Trump's political agenda, but it could open him up to Democratic-led congressional investigations.
In the US, gerrymandering - the redrawing of electoral boundaries to favour a political party - is only illegal if it is based on race.
Democrats in Virginia currently hold six out of the state's 11 seats, and the updated map could allow them to hold up to 10.
"Virginia just changed the trajectory of the 2026 midterms," Don Scott, who is the Democratic speaker of Virginia's statehouse, posted on social media.
"At a moment when Trump and his allies are trying to lock in power before voters have a say, Virginians stepped up and leveled the playing field for the entire country."
Glenn Youngkin, a former Republican governor of Virginia, called the measure an "egregious power grab".
"I urge the Virginia Supreme Court to rule against this unconstitutional process that will disenfranchise millions of Virginians," he wrote on X.
The redistricting referendum is the most expensive ballot measure in Virginia's history by far, according to figures from the Virginia Public Access Project. Over $80m (£59m) was raised as of earlier this month by groups on both sides of the effort.
In his first public comments on Virginia's measure, Trump said on Monday that if House Democrats win a majority in the midterm elections, "it's going to be a disaster".
"I don't know if you know what gerrymandering is, but it's not good," he added.
States usually redraw their voting maps once every decade after new population data is released as part of the US Census.
Texas became the first state to launch a mid-decade change amid pressure from Trump, setting off a race for other states to alter their maps to help their respective political parties.
Texas' new map will give Republicans an advantage in five additional seats.
In response to Trump's support of Texas' changes, California Gov Gavin Newsom launched a campaign last year to suspend the Golden State's independently drawn maps in order to "fight fire with fire".
California voters approved their new maps in a special referendum in November, giving Democrats an edge in five new districts.
Other Republican-led states have changed their maps, too. North Carolina and Missouri also passed new maps that give the party an edge.
Utah has also passed a new map with court-imposed districts that could give Democrats an advantage in one district.
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