With eight wins in a row, Sen. Barack Obama has pulled ahead in the delegate race for the Democratic nomination. The AP's Nedra Pickler looks at how Obama took the lead.  (Feb. 13)

The presidential nominating process takes the Republicans to Michigan for that state's primary and the Democrats to Nevada for a debate. The AP's Julie Pace looks at the day ahead in the race for the White House. (Jan. 15)

Voters are headed to the polls in Mississippi, a state that looks favorable for Barack Obama. But as the AP's Julie Pace reports, the talk is all about the possibility of a joint Clinton-Obama ticket. (March 11)

The AP's Ron Fournier examines the Democratic race after Barack Obama powered his way to three more overwhelming primary victories Tuesday and what Hillary Clinton must now do to reverse the course. (Feb. 13)

The Republican and Democratic fields have been narrowed as the campaign moves toward Super Tuesday. The AP's Julie Pace looks at what voters are saying about the remaining candidates. (Feb. 1)