The shadow Education Secretary was speaking in Manchester to party members, who will have the final say on whether it is he or rival David Davis who succeeds Michael Howard.
Mr Cameron, 39, said he was committed to a Tory Party that would "reconnect" with major cities like Manchester - where the Conservatives currently hold no council seats.
And he took a sideswipe at Mr Davis, who has promised tax cuts of £1,200 a year for all families, by saying it was "wrong" to write manifestos several years before an election.
Balance
Mr Cameron, speaking at Old Trafford football ground, told the M.E.N.: "We need to find a balance between urban and rural policies and reach out to people in the cities.
"We need to solve problems in the cities.
"I have been very clear on the need for modern, compassionate Conservatism.
"I want people to see the choice as between us as the party of the future and Gordon Brown as a person of the past."
Mr Cameron said the Conservatives' current plight was comparable with that of Manchester United - sleeping giants who were due a big victory.
"David [Davis] is a man of great ability and talent and a very good shadow Home Secretary," he added.
"It is possible we could win the next election under him but my programme makes that much more likely. I would not be here if I did not believe that."
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des, manchester (02/11/2005 at 12:29)
all politicians pi$$ in the same pot, and dont give a monkeys whats happening on our streets!!
Roy Ellor, Salford (02/11/2005 at 14:24)
The electorate have comprehensively rejected his party three times now, and no matter how he tries to restyle the Thatcherite core he cannot hide the truth.
The British public can see through the spin, and no amount of trying to emulate the Labour Party and its public relations machinery will sell the same, tired old boom, bust and cuts mantra to anyone with an ounce of sense.
Steve D, Manchester (02/11/2005 at 14:48)