Now that McCain has officially secured the republican nomination, the democrats are looking at a protracted battle (the next big knock-out race is on April 22) which could hurt the party in the end. Should Hillary Clinton leave the race? Yeah, she won Ohio and Texas but it is still not enough for her re-take the delegate lead. Is it time for her to concede the race or still go on? Or do you think she should keep at it until all of the primaries are finished (because at this point it is impossible for anyone to secure the nomination in a two- way race based on pledged delegates alone)?