Obama: Standing on Their Shoulders »
A look back at the foundation laid for Barack Obama's candidacy
Barack Obama’s Lesson in Social Media »
Senator adroitly uses Twitter to spread his message
Obama Secures Enough Delegates for Nomination »
Clinton to make key decisions in coming days
Obama nears the pledged delegate finish line »
Is there anything stopping him now?
Clinton Sweeps Obama for Win in West Virginia Primary »
Is this the first stanza of her swan song or enough to keep her campaign going?
Obama, Clinton Both Clinch Victories »
Illinois senator holds on to his lead in delegates and popular votes
Leading presidential hopefuls tackle mortgage crisis