Democrat Hillary Clinton's campaign will take part in a Wisconsin recount of votes cast in the U.S. presidential race won by Republican Donald Trump, a campaign official said on Saturday, Reuters reported. Wisconsin's election board on Friday approved the recount requested by Green Party candidate Jill Stein. She has said she wants to guarantee the integrity of the U.S. voting system since computer hacking had marked the Nov. 8 election. Marc Elias, the Clinton campaign counsel, said the campaign had not planned to seek a recount since its own investigation had failed to turn up any sign of hacking of voting systems. Clinton's campaign should be legally represented in Wisconsin to be able to monitor the recount, he said. If Stein follows through on promises for recounts in Pennsylvania and Michigan, "we will take the same approach in those states as well," Elias said. Wisconsin, Pennsylvania and Michigan were battleground states where Trump edged out Clinton by relatively thin margins. Although Trump won the Electoral College tally, Clinton will have won the national popular vote by more than 2 million ballots when the final results are in.