I found this recent MSNBC article interesting and very telling.

"MSNBC.com identified 144 journalists who made political contributions from 2004 through the start of the 2008 campaign, according to the public records of the Federal Election Commission. Most of the newsroom checkbooks leaned to the left: 125 journalists gave to Democrats and liberal causes. Only 17 gave to Republicans. Two gave to both parties."

You can read the full story by clicking here but that paragraph pretty much says it all.