The X Factor 2016 chiefs have investigated claims of a Finnish fix in favour of Saara Aalto.
The singer's shock turnaround has prompted a look into voting figures to see if Finnish fans were using a 'loophole' to vote from outside the UK.
“Saara was in the bottom two early in the competition but has now gone straight to being the favourite," a source told The Sun newspaper today. “Nobody is saying she hasn’t got a brilliant voice and that is why the judges have kept her in the show — because of her performances.
“But it does beg the question of how many votes from Finland are getting through when it’s just supposed to be people in this country.”
Although votes from the show's free mobile app are only meant to come from the UK, last year a method of casting votes from outside the country was revealed by fans of girl group 4th Impact.
However it's understood that although this can be used to cast votes, they aren't officially counted when the totals are verified.
A spokesperson for The X Factor confirmed they had looked into voting irregularities but there was no evidence of any issues.
"Our investigations have shown there is no evidence that the vote result is being affected by this activity, though we are continuing to monitor the situation," they said in a statement to the newspaper.
Saara's comeback has made X Factor history, going from the sing off in Week 1 to sailing through to the grand final at Wembley Arena next week.
Bookies have installed her as the favourite to win in what's shaping up to be the closest X Factor final in history.
The X Factor final airs this Saturday and Sunday night at 8PM on ITV.