The prison officer sailed through in tonight's X Factor 2013 results, as Luke Friend finished in third place.
Now only she and Nicholas McDonald remain ahead of tomorrow night's final live show.
With bookies William Hill there's a very clear faovurite to top the vote, with Sam at 1/6 while Nicholas is 7/2.
“Sam has been our odds on favourite for some time now and these final odds are the most one sided in recent memory,” said William Hill spokesman Joe Crilly. “The X-Factor crown is almost certainly Sam’s.”
Sam is the clear favourite to win this year’s X-Factor but it has only been the last few weeks that she has started to come to the fore. When she first performed her audition piece, she was 12/1.
She has been the subject of 15% of all bets placed during the X-Factor this year the biggest of which was on Wednesday from a punter in Coventry, who backed her to the tune of £8,000 at 1/4 which will see them scoop a £2,000 profit should she win the show.
The X Factor 2013 final continues tomorrow night on ITV from 7:30PM, featuring performances from Gary Barlow, Elton John, Katy Perry and One Direction.
Browse pictures of Saturday's X Factor 2013 final performances below...