Cole performed Fight For This Love on Sunday night's X Factor
X Factor judge Cheryl Cole's first solo single is on course to become the year's biggest-seller so far, the Official Charts Company (OCC) has said.
Fight For This Love sold more copies on its first day than Alexandra Burke's single Bad Boys - the current UK number one - did on its first day last week.
Bad Boys is currently the fastest-selling single of the year so far, with 185,000 copies sold last week.
Girls Aloud star Cole performed her song on Sunday's X Factor results show.
The singer, 26, stepped away from the judge's chair to take to the stage in a performance described by chief judge Simon Cowell as "incredible".
Cowell, whose Syco record label is home to last year's X Factor winner Burke, added: "Unfortunately, you're going to be number one next week."
An average audience of 12.7 million viewers watched the show, while Cole's Girls Aloud bandmates and footballer husband Ashley were among members of the studio audience.
OCC managing director Martin Talbot said Cole's "amazing" first-day sales put her in "pole position to top the official singles chart on Sunday".
"She is likely to set the sales standard by which everyone will be judged for the rest of the year in the run-up to Christmas," he added.