Gov. Walker's (R-WI) spokesman given immunity in on-going secret investigation.

As some of you have noticed we're in the midst of rolling out a redesigned TPM website. We first launched our new TPM2012 in the redesigned format and just this afternoon we welcomed TPM IdeaLab into the new format. You'll see a lot more of it in the coming weeks and we'll let you see the new front page in beta, as an option, before we make the switch permanent. But for those of you who are regular readers of the site, I wanted to give you some background on how the redesign came about and some of the priorities that guided us in putting together the design. In other words, what we were trying to achieve with the design and where we're taking the site. Read more here. And we're eager to get your feedback.

The DOJ believes that the congressional and state House redistricting maps signed into law by Rick Perry were designed with the intention of discriminating against minorities. In other words, it doesn't just have that effect. That was the idea.

We know no one can really read your mind. But a team of Berkeley researchers, using imaging technology to decode brainwaves, are starting to get close to being able to 'see' the visual imagery in your brain. Take a look at this.

Perry: I'm here to save your benefits from Obama.

Remember that company 'Blockbuster' from back when people watched movies on videotapes? They just launched a streaming video service to compete with Netflix.

Rick Perry: GOP doesn't need "the smoothest debater."

What's on the GOP wishlist for the debt Super Committee? Take a look.

A new study concludes that Twitter really did play a "central role" in the Arab Spring protests.

Conservative pundits line up to say Perry was an embarrassment in last night's debate.

Feel like the Dems need to find a way to get that fella some debate coaching before he gets sent back to Austin.

During last night's debate, Rick Perry's campaign sent out an email to the press making this incredible claim: "Gov. Perry never said that Social Security was unconstitutional."

Benjy Sarlin walks us through Perry's rapid evolution from declaring Social Security unconstitutional to pretending he never said such a thing.

Our photographer Jeff Malet reminds me that Gary Johnson's best laugh line from last night's debate made it into our slideshow of the Top Ten Protest Signs of 2009.

Rep. Ileana Ros-Lehtinen (R-FL) becomes the first Republican House Co-Sponsor of the Respect for Marriage Act, the bill that would repeal DOMA, the Defense of Marriage Act.

One of the big factors or mysteries of the GOP presidential primary context. Virtually all the polling data available says Mitt Romney is a substantially stronger candidate against President Obama than Rick Perry. But Republican voters don't agree. They consistently say Perry is more likely to beat President Obama.

House Republicans tonight passed a government funding bill that pays for new disaster aid with partisan budget cuts. The bill now faces a very uncertain future in the Senate.

Candidates and surrogates react to gay soldier boos in post-debate spin room.

Did you miss the debate? Here's the whole thing in 100 Seconds.

Those boos for the gay soldier who asked a question at tonight's debate are coming up in questions in the post-debate 'spin room' down in Orlando. TPM's Evan McMorris-Santoro is there and he'll be bringing us more details.

Late Update: Huntsman condemns it.

Definitely the best moment of the debate: when Gov. Perry said he would make Herman Cain mate with Newt Gingrich.

10:37 PM: That was a really weird encounter between Perry and Romney on who's the biggest flip-flopper. I mean, this should be one you can just hit right out of the park for anyone running against Romney. And Perry was clearly prepped with a series of attack lines. But he stumbled over them like you'd woken him up in the middle of the night. Or maybe he was a punch drunk heavyweight at the end of the 14th round. Then Romney comes in -- an amazing flip-flopper if there ever was one -- and manages to just run circles around Perry. It was almost sad. Romney was on fire. And yet, Perry's clearly this audience's guy. He's got the positions they like. Romney basically doesn't. He says he does. But people don't really buy that. So how far does the complete debate mastery go?