David Cameron on the campaign trail

David Cameron is on a nationwide tour, facing a strong challenge from the Liberal Democrats. He aims to reassert himself in the upcoming debate by warning against a hung parliament and advocating for a Conservative government to reform the House of Commons. Cameron is aware of the public's current favor towards Nick Clegg and seeks to neutralize this threat without aggressive attacks. He also addresses voter cynicism and emphasizes the need for a decisive Conservative victory. While on the road, Cameron deals with constituent complaints and personal matters, all while preparing for competition with Gordon Brown.

What does David Cameron warn against in relation to a hung parliament?

What is the significance of the 'Clegg factor' in the context of the debate?