British Prime Minister Gordon Brown said Sunday he would not “roll over””before the next election, which polls suggest he will lose badly, and dismissed gossip that his health was too poor to fight a strong campaign. Speaking at the start of his Labor Party's annual conference, Brown rejected Finance Minister Alistair Darling's comment that the party appeared to have “lost the will to live”, and said the government was working hard to revive Britain's economy. “This party has had to fight for everything it has got, I have had to fight in my life,” he told the BBC. “A setback can either be a challenge that means it's an opportunity to do something better or you roll over. I do not roll over.” Trailing in opinion polls before an election due by June 2010, Brown appealed to voters to remember his global leadership during the economic crisis and said a victory for the opposition Conservatives would lead to blanket spending cuts.