Hmmm....
Call me a conspiracy theorist, but I don't like it when Karl Rove is saying things I believe in - calling John McCain out for being a liar, as one chief example. It makes me think he's playing games with Democrats and he has another endgame in mind.
That is only enhanced by this, where Mitt Romney is saying the same things. All of this when McCain is enjoying his biggest bump in the polls. Now, either this is their only way of sending a message to that campaign (doubtful), they are trying to sink his campaign for personal reasons (possible, I guess), or they have something else in mind where painting McCain as a liar is actually beneficial in some way I can't think of.
[youtube https://www.youtube.com/watch?v=UY5Plqs5d98&color1=0xb1b1b1&color2=0xcfcfcf&hl=en&fs=1]
I can't see the endzone here, and that actually worries me. In the meantime, I guess it's safe to say that whether John McCain is a liar or not is a non-partisan issue - everyone agrees that he is!
Updated: OK, this was actually from earlier this year when Romney was still competing against McCain in the primary. Which makes more sense -- and has the added benefit of increasing the 'meme' of John McCain being a dirty liar. (Hey, if they want to use Hillary's words against Obama, that road goes both ways. In any case, this is obviously not part of a Rovian campaign, at least not this clip in general.