As many others have observed, it's an odd thing about political journalists that they hate much about the subject they cover, specifically the messy business of politicians actually doing things to attract supporters and voters. While one can certainly hate certain structural aspects of politics as institutionalized in this country and wish them to change, the part about politicians trying to do things to get voters to vote for them is pretty much a constant in a democracy.
To be a good critic you actually have to have the capacity to love what you cover, otherwise you're just a cynical curmudgeon.