David Cameron made a plea to the British public to vote for the Conservatives if they want "real change".

Speaking at a press conference the Tory leader said: "Whether you've been a Lib Dem voter or a Labour voter or a Green voter - if you care about the environment, if you want action to improve your quality of life, if you care about civil liberties, if you care about people power, if you want a clean break from the past - vote Conservative."

The optimistic speech was quashed when the Tories were pressed about the electoral system. Mr Cameron expressed his support for the first-past-the-post system defending it as "a decisive way of changing our government."

And when asked again to make a clear pledge on whether he would consider a reform, he added: "I do not want the electoral system changed."

To redeem the public's confidence in the Conservatives, Mr Cameron said that voting either Labour or Lib Dem would lead to a situation where politicians ruled by "haggling and scheming".

He went on: "This is the great con of PR...It doesn't put power in the hands of the people, it puts power in the hands of politicians."