As the general election contest begins to take shape, a lot of the early talk from the Obama campaign about "changing the map" has been symbolized by its much-broadcast interest in going after my home state of Georgia. It's an audiacious move, or perhaps even a feint, on the surface. Yes, Georgia went comfortably for native son Jimmy Carter in 1976 and 1980, and narrowly for Bill Clinton in 1992. But beginnng in 1996, Georgia trended heavily Republican (mainly because of the population explosion in the Atlanta suburbs), with Bush winning the state by 12% in 2000 and 18% in 2004.

The Obama campaign's been listing Georgia as a potential target for a while, on the theory that a massive increase in African-American turnout (and in the Democratic margin there) could significantly narrow the gap. And indeed, the last big Democratic year in Georgia was in 1998, when black tunout (motivated in part by an overtly racial GOP statewide campaign) exceeded white turnout for the first time ever, and leapt from about 19% of the statewide vote to 29%.

But there's another factor in play, which the first recent general election poll for Georgia has illustrated: Bob Barr. The former Republican Congressman for Georgia, and now the Libertarian candidate for president, gets 6% in an Insider Advantage poll of the Peach State, clearly cutting into John McCain's vote, who leads Obama 44%-43%. (There's actually another Georgian running for president, Green Party candidate Cynthia McKinney, but under current conditions she's unlikely to dent Obama's African-American support).

This data led Nate Silver of fivethirtyeight.com and TNR, who earlier mocked the idea of targeting Georgia, to recant a bit. But it's all very, very early. Every presidential campaign talks about expanding the battleground at this stage, before focusing its resources down the home stretch to the states that are clearly winnable. But having money to burn, the Obama campaign has every reason to throw a scare into the relatively cash-strapped McCain campaign in places like Georgia. If McCain fails to rise to the bait, and banks Georgia as a sure thing, he could get a nasty surprise if Georgia looks dead-even in late October. If against the odds, Obama's running-mate is Sam Nunn (who's still well-known in his native state if not elsewhere), Obama could actually be the favorite in GA, which would indeed scramble the map.