London: Conservative leader David Cameron Friday morning asked Gordon Brown to vacate No 10 Downing Street as Labour "had clearly lost its mandate to govern".
Exit polls show that the Conservatives could be the largest party in a hung Parliament.
"What is clear from these results is that our country wants change. That change is going to require new leadership. We will stand ready to do all we can to bring that leadership," Daily Mail quoted Cameron as saying.
He said that Labour "had clearly lost its mandate to govern".
There were significant swings from Labour to the Tories in the first two seats to declared. It was 11.6 percent in Washington and Sunderland West and 8.4 percent in Houghton and Sunderland South.
Brown told constituents: "The outcome of this country`s vote is not yet known, but my duty to the country, coming out of this election, is to play my part in Britain having a strong, stable and principled government, able to lead Britain into sustained economic recovery."
He thanked supporters for their unwavering support and also thanked his wife, Sarah, for her love and support.