Reuters: Obama, McCain win Wisconsin 20 February

This is his 9th straight victory over New York Sen. Hillary Clinton in their battle for the party's presidential nomination.

Democratic Senator Barack Obama now has a 10-contest winning streak -- after decisively winning the Wisconsin and Hawaii Democratic Primaries. On the Republican side, John McCain won the Washington state and Wisconsin Republican Primaries over former Arkansas Governor Mike Huckabee by a significant margin. Jon Decker reports.

By beating Barack Obama in three out of four Democratic primaries-- Clinton stopped Obama's 12 state winning streak and gave a much-needed boost to her campaign. Jon Decker reports.

Obama trounced his Democratic rival, taking 61 percent of the vote to Clinton's 37 percent. Exit polls showed that about 90 percent of African-Americans backed Obama, who is trying to become America's first black president. The victory in Mississippi extended Obama's lead over Hillary Clinton in pledged delegates to the August nominating convention. The next big showdown is in Pennsylvania in six weeks time. With 158 delegates at stake, it's the biggest single-state haul remaining in the race for the nomination.

The Democratic field got smaller Thursday, when New Mexico Governor Bill Richardson dropped his bid for the presidency. Meanwhile, Republicans have turned their attention to Michigan - whose primary is next Tuesday. Jon Decker reports.

The next big battle for delegates is the Pennsylvania primary on April 22

The Illinois senator ran on a campaign of change and against what he called the partisan climate in American politics. Obama's win has dealt a setback to national front-runner New York Senator Hillary Clinton in the first nominating contest of the 2008 U.S presidential election and gives him momentum as he heads into the January 8th primary vote in New Hampshire, where polls showed him in a tight race with Clinton.

On the Republican side, Super Tuesday's elections put John McCain -- who won nine primaries-- including New York, California, Missouri and Illinois-- well on his way to his party's presidential nomination. Jon Decker reports.

The vetting of Obama by the press could begin this spring or summer after the primaries and before the Democratic convention.