It's not that most of them are too left wing.  Many are too right wing as well.
Reporters have to go back to being objective - absolutely - and then they will garner a lot more respect from the public.
What's the reason "talking points" were invented? Because reporters twist words with their own bias (left or right)?  Turning politicians into cardboard cutouts because they only report on polling, sound bites, and "gaffes", rather than the real issues or politicians of those they are reporting on.
Give any politician a proper, half hour to hour long interview and properly report on their position with some neutrality, and politicians might actually feel comfortable telling the truth again.  
Let the voters decide for themselves.  It's your job to report - not to contort.