While his super PAC supporters duke it out with other Republicans, former Massachusetts governor Mitt Romney’s final South Carolina ad is squarely focused on the man in the White House.

Republican presidential candidate Mitt Romney attacks President Obama’s leadership and handling of the federal budget in a political ad. (Jan. 19) (CMAG)

”Ready To Lead” uses footage from Romney’s victory speech in New Hampshire last week, which sounded more like an acceptance speech than a rally.

“President Obama wants to fundamentally transform America,” Romney says. “I stand ready to lead us down a different path ... “If you believe that the disappointments of the last few years are a detour, not a destiny, then I am asking for your vote.”

The speech is intercut with clips of Romney shaking hands across the Palmetto State.

The obvious message: I am the nominee.

This week’s news has shaken the aura of inevitablity around Romney a bit. He was mediocre in Monday’s debate, his wealth has come under scrutiny, and it turns out he probably lost the Iowa caucuses. New polls from CNN and NBC show his South Carolina lead eroding down to ten points above former House speaker Newt Gingrich.

Still, Romney will almost certainly be the one face Obama in the fall, and this ad works as well for the general election as it does for Saturday’s primary.