Reuters: Just exactly who's the frontrunner? 14 February

Obama, who is locked in a tight duel for the Democratic presidential nomination with New York Sen. Hillary Clinton, said struggling homeowners need immediate relief. Speaker: Sen. Barack Obama

Senator Clinton and Senator Obama have split the first four significant nominating contests so far. This was the final Democratic debate before Super Tuesday next week -- when 23 states will have their own say as to who should be the Democratic presidential nominee. Jon Decker reports.

The wife of former president Bill Clinton tried to tackle Obama over something he had said in a transcript and ended up trading barbed comments with him. The third presidential candidate accused them of squabbling. However they did agree on their fears for the U.S. economy and possible recession.

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.

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.

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

Exchanges between the two Democratic presidential candidates become heated as they debated their views on the country's health care system. Whilst both senators have proposed universal healthcare cover for Americans, Clinton and Obama insist each other's proposals would leave too many people without cover.

The quality of wins argument may win Hillary Clinton the nomination, but there's a fear that it could divide the party-- with supporters of Barack Obama staying home in the general election. Jon Decker reports.

Iowa turned into a battle among Democrats between Clinton's message of experience and Obama's of change which the first-term Illinois senator won decisively.The Illinois senator, bidding to become the first black U.S. president, said his upbeat campaign appealed to young people and had attracted the record numbers that propelled him past New York Sen. Hillary Clinton on Thursday to make him Iowa's choice for the Democratic presidential nomination.