The 1992 song is competing with X Factor winner Joe McElderry to claim the chart crown this Sunday. Figures on Tuesday suggested the rock group were in the lead.
Speaking to BBC 6 Music Morello said his “rebel anthem song will transcend the Christmas holidays".
He explained: “The one thing about the X Factor show, much like our own American Idol, is if you're a viewer of the show you get to vote for one contestant or the other, but you don't really get to vote against the show itself until now.”
“There are a lot of people who don't feel represented by it and this Christmas in the UK they're having their say.”
Joe McElderry- who released his song The Climb straight after winning the X Factor show- also spoke about the race.
He told Radio 1: “I think it’s the same as any other chart battle and I just hope people go out and buy it.”
“Good luck to them (RATM) as well. I haven’t heard their song but I’ll have to have a listen.”
The Climb was originally recorded by Miley Cyrus.
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