The US Green Party led by Jill Stein has dropped a court case seeking a state-wide recount in Pennsylvania.
A court filing said Green Party voters could not afford the $1m (£785,000) bond ordered by the court by Monday.
Ms Stein has tried to force recounts in Michigan, Wisconsin and Pennsylvania, three states narrowly and unexpectedly won by President-elect Donald Trump.
But Trump supporters tried to block the recounts, which are unlikely to change the polls results if they take place.
The Greens’ decision comes two days before a court hearing was scheduled on the case, in the state where Donald Trump’s margin of victory was 49,000, or less than 1%.
“Petitioners are regular citizens of ordinary means. They cannot afford to post the $1,000,000 bond required by the court,” read a court filing.
Jill Stein posted on social media “#Recount2016 is so expensive because of elected leaders who have refused to invest in a 21st-century voting system.”
Her aides say she will make an announcement about the Pennsylvania recount on Monday outside Trump Tower in New York.
Mr Trump’s supporters had been trying to block a recount in Pennsylvania, on the grounds that there was no evidence of tampering with the voting system.
On Friday, a federal court in Wisconsin rejected a request by Mr Trump’s supporters to immediately halt the recount there, but allowed a lawsuit to proceed.
Mr Trump won Wisconsin by just 22,000 votes.
In Michigan, Mr Trump’s team filed a complaint with the elections board to block a recount of all 4.8 million ballots cast in the state, which he won by 10,700 votes.
Ms Stein, who says her campaign is focused on ensuring the integrity of the US voting system, has questioned why Mr Trump is “afraid” of a recount.
Could recounts change election result?
The Green Party-backed recount campaign was focused on three states that Mr Trump won – Wisconsin (by 22,177 votes), Michigan (10,704 votes) and Pennsylvania (49,000 votes)
According to federal law, all recounts have to be concluded within 35 days of the election, which is 13 December
All three states account for 46 votes in the Electoral College, enough to tip the election to Mrs Clinton if they moved from Mr Trump’s total to hers – but this is viewed as highly unlikely
For Mrs Clinton to be declared victor would require a swing of more than 100,000 votes across three states – a move that would dwarf all previous recount results.
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