CNN: news from the Super Tuesday mega-primary vote

The Super Tuesday mega-primary vote spanning 22 states could be crunch time for the US presidential candidates. For the Democrats it could decide whether Hillary Clinton returns to frontrunner status or Barack Obama continues his breathtaking surge; and for the Republicans, it could confirm that John McCain is on course for victory over his rival Mitt Romney. Watch coverage from CNN on from 0800GMT & midnight West Coast Time.