And how many people run on the campaign platform of not spending? "Vote for me, I went to DC last time and didn't approve of any spending above the bare minimum necessary to keep the country going. I didn't approve of any pork for our state/district."
I know WE would vote for such a candidate, but we're rare.
Everybody wants to get rid of spending, except for their own pet projects. Everybody wants to get rid of pork, except the pork that goes to their district.