[1] In the days leading up to the primary the Hillary Clinton campaign ran television ads criticizing Obama on healthcare and for not agreeing to more candidate debates.

[2] This caused the Obama campaign to launch a response ad that mentioned the 18 debates already held and 2 more scheduled.

[8] In the weeks and days leading up to the Wisconsin Democratic Primary, most pundits agreed that it was Hillary Clinton's chance to halt Obama's momentum after winning contests in Washington, Louisiana, Nebraska, Virginia, Maryland, Washington, D.C. following Super Tuesday.

However, CNN Exit Polls showed that Obama won the white vote (which comprised 87% of the electorate on primary day) 54%-45%.

[11] After the victory in Wisconsin as well as Caucuses in Washington and a primary in Hawaii held on the same day gave Obama the momentum of winning 10 straight contests.