What about an independent challenge from Russ Feingold/(Alan Grayson?) that was funded by George Soros in November 2012?
Run, Russ, Run
This is the first time I've written any sentence in all caps, but I want someone to explain it to me if possible. Someone from the left, preferably this poster:
WHAT PURPOSE WOULD RUSS FEINGOLD SERVE IN A 2012 RUN?
He could only harm Obama's chances of winning reelection in 2012. Nader hurt Gore in 2000 in the general. Perot hurt Bush in 1992 in the general. Kennedy damaged Carter for th 1980 general. Running a guaranteed loser, whether in the primary or the general, only serves to damage the candidate they're most like.
Russ Feingold's chance of winning would be as close to zero as you get, so why run.
When I read the words "guaranteed loser" the first name that comes to my mind is Barack Obama. This president has never been concerned with the welfare of 99% of Americans judging by the number of Wall Street bankers currently serving jail time for stock or control fraud.
Or the "Closed" signs hanging on Gitmo.
I would argue that 6 more years of Obama losing battles he's afraid to fight would guarantee corporate control of US politics on a scale never seen before.
Which is probably exactly why Goldman Sachs anointed him in the first place.
As to what purpose Feingold would serve, Alexander Cockburn has the best reply I've seen:
"Why would he be running? Unlike Teddy Kennedy challenging Jimmy Carter in 1979, Feingold would have a swift answer.
"
To fight against the Republicans and the White House in defense of the causes he has publicly supported across a lifetime.
"
He has opposed the wars in Iraq and Afghanistan.
"
His was the single Senate vote against the Patriot Act; his was a consistent vote against the constitutional abuses of both the Bush and Obama administrations.
"
He opposed NAFTA and the bank bailouts. He is for economic justice and full employment. He is the implacable foe of corporate control of the electoral process.
"The Supreme Courts Citizens United decision in January was aimed in part at his landmark campaign finance reform bill.
"A Wisconsin voter wrote me in the wake of the election, 'Feingold likely lost because his opponents ads, including
billboards with pictures of him and Obama, as well as TV and radio ads, and last-minute phone bursts, convinced many voters that he has been a party-line Democratic insider all these years...'"
Run, Russ, Run
The short answer to your question is...Anyone BUT Obama in 2012.