The recount effort by Green Party presidential candidate Jill Stein in three crucial U.S. states came to an end on Monday, after weeks of legal wrangling yielded only one electoral review in Wisconsin.

A U.S. judge in Pennsylvania rejected Steins request for a recount and an examination of that states voting machines for evidence of hacking in the Nov. 8 election won by Republican Donald Trump .

Meanwhile, Wisconsin election officials said on Monday they had completed their 10-day recount with only small changes to the vote total.

Stein, who finished fourth in the election, challenged the results in those two states as well as Michigan, where the states top court on Friday denied Steins last-ditch appeal to keep a recount going. All of those traditionally Democratic strongholds supported Trump over Democrat Hillary Clinton .

Even if all three recounts had taken place, they were always unlikely to change the outcome.

Stein argued that the use in many Pennsylvania districts of electronic voting machines with no paper trail left the system vulnerable to hacking.

In a 31-page opinion, U.S. District Judge Paul Diamond in Philadelphia said it borders on the irrational to suspect hacking occurred in Pennsylvania. He also emphasized that the deadline to certify the states electoral votes is Tuesday, making it impossible to hold a recount in time.

While there is no evidence of large-scale voting machine hacking, U.S. intelligence agencies have concluded that Russia targeted Clinton in a series of cyber attacks on Democratic Party groups. Trump has questioned those reports.

In response to Diamonds ruling, Stein said in a statement that Pennsylvanians right to have their votes counted had been stripped from right under them.

In Wisconsin, Trumps margin over Clinton increased by 131 votes to 22,748 from 22,617 following the recount, according to the state elections commission.

Based on the recount, they (voters) can have confidence that Wisconsins election results accurately reflect the will of the people, regardless of whether they are counted by hand or by machine, Wisconsin Elections Commission chair Mark Thomsen said in a statement.

Trump won Pennsylvania by more than 44,000 votes and Michigan by more than 10,000 votes, according to the latest figures.

Despite winning the national popular vote by more than 2 percent, Clinton would have had to sweep those states to win the presidency under the U.S. Electoral College system, which assigns electoral votes state-by-state rather than by overall national totals.

(Reporting by Joseph Ax in New York; Additional reporting by Timothy McLaughlin in Chicago; Editing by Lisa Von Ahn, Bill Trott and Andrew Hay)