do you know what happens when a really powerful, - strong orange force goes against a blue wall? - let me show you. cheering. polls suggest just 7% of voters back his party, but sir ed davey insists this isn't a one—off, and lib dems could knock down other conservative strongholds in southern england. i think there is a shock wave through british politics. this wasn't just another liberal democrat by—election victory, it was one of our best ever, and on the swing that we achieved, dozens of conservative seats would fall to the liberal democrats in the next election. so the lib dems we know are good spectacular by—election wins, and they will see this as a sign that they are the main challengers to the tories in many southern seats, not labour. and there are conservative mps concerned that there has been too much emphasis on the north of england, and this is what happens when tory voters feel ignored. many here are furious about hs2, the high—speed rail link being carved through the chilterns,