Tinie Tempah and Labrinth are battling for this weekend's No 1, according to the Official Chart Update.
Written In The Stars, Tinie's single, so far has a slight advantage over Labrinth's Let The Sunshine.
Sales for the singles are likely to be amongst the highest for a No 1 this year.
Adele's Make You Feel My Love is expected to re-enter the chart in fourth place, after it was sung by X Factor contestants at the weekend.
Make You Feel My Love did not get into the top 10 when it was originally released in 2008.
Kylie will be hoping for her 34th top 10 hit with Get Outta My Way, which is on course for a position just outside the top 10.
In the Official Album Chart, Mark Ronson is leading the way with his latest album Record Collection.