With the Republican race for the presidential nomination at a pivotal point and with 59 delegates at stake in Arizona and Michigan, tonight's debate has some promise.
The last time we were here - less than an hour before a Republican debate - former Massachusetts Gov. Mitt Romney seemed like the inevitable Republican nominee for president.
Since, we've seen former Speaker Newt Gingrich fade in the polls and former Pennsylvania Sen. Rick Santorum surge. Also since the last debate, Santorum had that Feb. 7 sweep, winning Missouri, Minnesota and Colorado.
Tonight we'll be helping NPR's Elections Unit by live blogging the debate. So head on over to It's All Politics for our coverage, which starts at 8 p.m. ET.