"It is too early to say exactly what sort if result there will be at the end of this night and at the end of this election campaign," Cameron said, adding that for him the campaign was about the tough decisions he had to make.
Cameron praised his party's performance in the UK general election, stressing that he is set on uniting his country.
"This is clearly a very strong night for the Conservative party. We've had a positive response to a positive campaign about safeguarding our economy, about creating jobs," he said, adding that his aim "remains simple — to govern on the basis of governing for everyone in our United Kingdom."
Cameron reiterated the promise of power devolution to Wales and Scotland.
"Above all, I want to bring our country together, our United Kingdom together," the leader of the Conservatives said, adding that he also wants "to make sure" that "economic recovery" reaches every part of the United Kingdom.
