Would the electorate always vote for lower taxes, in their own self interest?
Governments need tax revenue to provide the services that voters want. The real question is "Will the voters want to have their cake and eat it?" or will they understand and appreciate the wider perspective; the difficult decisions that must be taken to prioritise the use of scarce resources. Government cannot be held accountable for "delivering" if they haven't been given the appropriate resources. It is a matter of faith that the majority will put aside their self interest for the good of the nation.