William Hague has issued a rallying cry to his supporters in his final day on the campaign trail.

The Tory leader predicted: "Tomorrow the world will find out that the forces of conservatism are still on the march," Hague said.

He claimed voters would vote against Labour's four years of failure. "Imagine first their disappointment, when he broke these promises, and then their anger when he blamed them for his own failure to deliver," he told a party rally.

He joined the party faithful at a London TV studio following an early-morning visit to Smithfields, the London meat market, where he told reporters that backing the Liberal Democrats was a wasted vote.

"Thirty days ago I began this campaign by saying we would show the nation a better way. We've shown how we can deliver lower taxes and safeguard public services," Hague told his audience.

The Tory leader claimed the government was soft on crime. "Labour has had nothing to say about crime except saying they will recruit more people when they can't keep the ones that they have already," he said.

"Issue by issue we have made and won our case," he said. "We have put forward answers that cannot be questioned and put questions that Labour cannot answer."

Hague said the party had not lost its focus. "We know who we are and what we stand for," he said. "I have been proud of the campaign we have fought."