Get rid of the electoral college first of all. It had a reason for existence in the days when there was no fast method of communication. It now serves no purpose but to piss people off. When a president is elected who received fewer votes than the one who lost the election, something is seriously wrong with the system.
Totally eliminate porkbarrel politics. If a senator or a congressman wants financing for one of his pet projects or to help his friends, he should have to put it up to a vote and let it stand on its own merits, not sneak it into a bill which it has no relevance to.
Politicians today need to be reminded that ours is a government OF the people, BY the people and FOR the people. This seems to be something that has been forgotten for much too long.
Every politician should be forced to live for a year in poverty, like a vast number of the people they purport to represent. They seem to have no clue what life is like in the REAL world.