dem leader , who hopes to hold the balance of power after may 7 , said the idea of more than two parties forming a government is not ` going to work ' .
he said it would be a ` messy ' way to run the country , and risked instability with the future of the government put in peril with every late night vote that mr clegg told voters to go to the ballot box on may 7 expecting a hung parliament , with no one party able to secure an overall majority of mps in the commons .