They lean towards sensationalism.
They're tax-payer funded, so they want to make certain they get the Tax Payers a good story. That means over-embelishing everything to make it seem like their tax-dollars are giving them detailed news, when they're really not getting detailed news.
This is why they seem to not "lean"... because they treat either side with the same level of exaggeration and embellishment for the purpose of giving an entertaining gripping story.