Little Mix's Black Magic has been on top for the past two weeks already but may be about to lose its Singles Chart crown to fellow X Factor star Ella Henderson and her collaboration with Sigma, Glitterball.
The songs are Number 1 and 2 and right now it's a very close race between them.
The keepers of all the sales over at the Official Charts Company report this evening:
Black Magic currently leads the way, but with Glitterball just 2,500 combined sales behind at the halfway point, it’s all to play for.
Sigma have previously topped the Official Singles Chart with 2014’s Nobody to Love and Changing feat. Paloma Faith, while Ella Henderson claimed the Number 1 spot with her debut release Ghost in June last year.
Meanwhile Ella and Little Mix aren't the only X Factor singers in the charts this week.
Former JLS band member Aston Merrygold is on course for his first solo Top 40 entry but he won't be troubling the girls at the number one spot.
Instead, his new single Get Stupid is currently at Number 16 in the charts in today's midweek update.