Joe Klein has a smart take:
"Oh, so now McCain says it’s a good idea to inflate your tires. This is something new: He has taken to attacking Obama on positions where he agrees with Obama. Another example: he flayed Obama for his proposal to withdraw from Iraq, then said it was a "pretty good" timetable. Meanwhile, he also continues to attack Obama for positions Obama hasn’t taken or is no longer taking–like Obama’s position on offshore drilling, which has become a reluctant yes, in order to get a compromise piece of energy legislation through the Senate. McCain continues to say Obama is opposed. He also says Obama is opposed to nuclear power, which Obama never has been–a position he took some grief about during the Democratic primaries. It’s getting hard to keep all of McCain’s attacks–and his rules about when it’s ok to compromise and when not–straight."
The closer the two are on substantive matters, the more stinging the McCain attacks.
The Dish 