Nicole Scherzinger's act reclaimed the 'best singer' result for a third week in a row. His performances of 'SOS' and 'Let's Get It On' took a massive 48% of the vote, which saw over 14,000 DS readers pick their favourite.
Rival Jahmene Douglas finished in second place, having been third last week. His covers of 'I Have a Dream' and 'The Tracks of My Tears' secured 18.4%.
Union J climbed to third place this week. The boyband's performances of 'The Winner Takes It All' and 'I'll Be There' won 15.8% of the vote.
Rylan Clark drops into the bottom three, with 10.7% voting for his ABBA and Supremes covers.
As with the last few weeks, Christopher Maloney finished in last place with only 7% voting for his covers of 'Fernando' and 'Dancing on the Ceiling'.
Last week, James Arthur and Ella Henderson were named the top two acts in Digital Spy's poll, but were the bottom two in Sunday's results show.
The X Factor continues tonight at 8pm, with the results of the eighth public vote being announced by Dermot O'Leary.
Rihanna and Bruno Mars will appear as musical guests during the show.
Photo gallery - The X Factor ABBA and Motown week:
Copyright: Ken McKay/Thames/Rex Features