Nielsen Online reports that in the weeks leading up to Super Tuesday, from January 1st to the 29th, 2008, Barack Obama drove the largest share of blog discussions among the remaining presidential candidates, with 0.59%. Democratic rival Hillary Clinton ranked a close second, with 0.51% of discussion. The three Republican contenders were evenly matched; John McCain and Mike Huckabee each garnered 0.29% of discussion, while Mitt Romney accounted for 0.28%.