The brawl for the Democratic nomination may be about to stop: numbers leave no chance to Clinton of snatching the nomination. However, Obama may have several concerns to think about in the coming weeks (aside the fact that Hillary hasn't withdraw yet). One is his trouble in convincing the 65+, voters, who in Indiana preferred Clinton by a massive 71% to 29%. This pattern was already established in the first primaries and caucuses and was particularly apparent in Ohio, where Hillary crushed Obama in this age group by a whopping 46-point margin, and Tennessee, where she got 40 percentage points more than her opponent.
Obama still has an overwhelming support among the 18-29 years-old, but this age group is smaller, and less inclined to vote than seniors. In 2004, for example, two over-65 citizens voted for every under-29 one. That means that facing McCain (an appealing figure to seniors, at least because he is over-70 himself) Obama may have a potentially dangerous weakness in the general election. Seniors count for much in some key states like Florida and Ohio, that in 2000 and in 2004 went to George Bush, tilting the electoral college to Republicans.
