CNN Reports that an average of five national polls puts Obama ahead of McCain by 6 percent in the national presidential election. Obama enjoyed a larger lead weeks ago, and it may be that the shine of the new and exciting candidate has worn a bit. Strategically look for McCain to criticize Obama's foreign policy experience, and Obama to focus more on the economy and tying McCain to President Bush and the current huge challenges facing the American economy.
Elections often boil down to economic considerations and this gives Obama a huge advantage as things are not getting better and are very unlikely to improve by November. Voters who like McCain may still reject him on the basis that they want "change" in the economy and are willing to take a chance with Obama.
Of course the reality is that presidents are not the primary economic drivers by any means, and neither Obama nor McCain is likely to fix our economic troubles anytime soon.