And you know what? There’s nothing necessarily wrong with that, as long as MSNBC is up-front about their political bias.

But anyway, here’s my proof:

MSNBC talk show host Keith Olbermann is getting a new running mate, Rachel Maddow, who will follow Olbermann’s “Countdown” with her own prime-time hour starting next month.

“The Rachel Maddow Show,” billed as “a smart look at politics, pop culture and all the day’s top stories,” will originate weeknights at 9 p.m. EDT…

Olbermann’s program has particularly proved a breakout success. With his liberal slant and sharply anti-Bush-administration stance, Olbermann has emerged in the eyes of many viewers as the left-wing response to Fox, which is dominated by conservative hosts including Bill O’Reilly and Sean Hannity.

Maddow seems to represent a comfortable ideological fit with Olbermann, whose show airs at 8 p.m. EDT. Since being named an MSNBC political analyst last January, Maddow has subbed for Olbermann and has frequently contributed to his show.

She will also continue her radio show on Air America, a liberal-focused network where she has been heard since it signed on in 2004.

Like I said, even though I’m not a left-wing guy I have no problem with MSNBC running left-wing content. But this should let the cat out of the bag on MSNBC’s bias. I mean, from 8-10 PM — prime time — you have 2 openly-liberal hosts. Compare that to the “arch-conversative” FOX News, who has a questionably-conservative and openly-independent host Bill O’Reilly at 8 PM, followed by a program featuring one openly right-wing guy, Sean Hannity, and one openly left-wing guy, Alan Colmes, each of which gets equal airtime.

You know what I think would be the most entertaining scenario? “Hannity and Maddow”.

That would be one wild show.