CNN is defending its job in vetting questions for last night's debate, reports Politico's Kenneth Vogel:

The retired general who quizzed Republican presidential candidates about gays and lesbians in the military was not the only person linked to a Democratic presidential candidate who got to ask a question at Wednesday’s CNN/YouTube debate.

CNN also aired questions from supporters of Democratic candidates John Edwards and Barack Obama.

And that’s fine by the network, which is standing by its question selection process and lashing out at critics who say the debate demonstrated CNN’s liberal bias.

“We’re focused on the questions, not the questioners,” said Sam Feist, CNN’s political director.

There might be something to that approach. As our own Brad Wilmouth reported, the questions largely pressed the Republican field from the right.: