On paper, Tim Pawlenty may be the most formidable Republican challenger to President Obama in 2012. Too bad he's running as somebody else. At this week's first cattle call of the GOP presidential primary, hosted by the Iowa Faith & Freedom Coalition, Pawlenty, a former Minnesota governor, masqueraded as a local guy on a first-name basis with the group's president, Steve Scheffler. Except Pawlenty thrice called him "Chuck," as in, "I want to thank Chuck," and "Chuck spoke about it today."