The Essex couple who sparked an internet campaign to get a Rage Against the Machine song to Christmas number one were last night letting their victory sink in.
Jon and Tracy Morter used their experience of trying to get Rick Astley to the top of the festive chart last year to feed "stratospheric" success this time around.
While the major winner will be record company Sony, Mr Morter said getting Rage Against the Machine's Killing in the Name to number one was "pretty amazing".
The 35-year-old from Essex, who works for a hi-fi company which he would not name, said he learned how the system worked through last year's bid.
He said: "What I learned from that was how the charts work a little bit really and what you can get away with.
"When this year came around I just thought 'let's have another go'. If anything, last year was fun, it was just a good bit of fun I think.
"This year it has gone stratospheric."
Simon Cowell called the Morters to congratulate them on their campaign last night.
Mr Morter said: "He was very nice, really nice to talk to. We had a little chat about music and just things in general really.
"He was lovely and he wished us well and he also said it was probably the best Christmas number one race that he has been involved with. He thanked us for bringing the race back a little bit and making it exciting. He said this was the most looked-forward to chart in many, many years."
McElderry's X Factor mentor Cheryl Cole said that she would be "devastated" if he did not clinch the top spot, but Mr Morter insisted they had not intended to upset anyone.
Mrs Morter, 30, said the campaign started as a "silly idea" to spice up the charts.
"It was one of those little silly ideas that make you laugh in your own house," she said. "We really love music and remember when were were young the charts were really exciting. We just thought 'wouldn't it be funny if that song got to number one'.
"It took something really strong and forceful to get people behind it."
Her husband is now considering another assault on the charts to coincide with the World Cup, but must return to work tomorrow and does not plan another Christmas campaign.
"What can top this? How can you top putting one of your favourite bands at the top of the charts at Christmas?", he said.