Van Outen, Louis Smith, Dani Harmer and Girls Aloud star Kimberley Walsh are in a four-way battle in this weekend's final, which will end with a winner being crowned in a public vote.
The West End performer was a former bookies' favourite to take home the Glitterball trophy, but she's now in last place with punters and she's also come bottom of Digital Spy readers' poll.
Van Outen has been near the top of the judges' scoreboard for most of the series, but has failed to win over the public and slipped into the bottom two dance-off in last weekend's semi-final for the second time.
In the Digital Spy poll, popstar Walsh is winning with 49% of the vote, ahead of Dani Harmer with 21% and Louis Smith with 20%. Van Outen only has 10.%.
Meanwhile, bookmakers have made Olympic star Smith the firm favourite to take home the title with short odds of 4/6. Walsh can be backed at 13/8, Dani Harmer is 14/1, while Van Outen has long odds of 20/1.
The Strictly final airs on Saturday (December 22) on BBC One.
Strictly Come Dancing semi: