It’s politics, if the Conservative party can’t make a case to the country good enough to be given an overall majority then the only way left is to work with other parties.  If the price is electoral reform and other political reforms also banking reforms and tax reforms then that price has to be paid. 

 Perhaps the Conservatives will make that case, there are 10 days to go, anything can happen yet.  After all who but party insiders would have predicted Clegg