Taegan sums up the last two weeks accurately, I think:
The Obama campaign wanted this election to be a stark choice between two different governing philosophies and not a referendum on the president's tenure. With this beautifully orchestrated convention — and with poor strategic decisions and unforced errors by Mitt Romney and the Republicans — they have succeeded.
Democrats decisively won the battle of the party conventions. It wasn't even close really. And they continue to hold the upper hand in this election.
Hence the Romney ad avalanche beginning today. But what Obama did last night was project a realistic optimism; and the constant harping on the recession by the GOP – though obviously totally legit – can come off as pessimistic. The Republicans need to avoid that trap. Optimism always wins in American elections.