With only some three and a half years to go until the next presidential election, President Obama has pulled out a huge lead over potential challenger Sarah Palin, a new PPP national survey finds (March 13-15, 691 RV, MoE +/- 3.7%).

Obama holds a 55%-35% lead over the Alaska governor, which -- if this were November 2012 -- would be "the largest popular vote blowout since George McGovern ran against Richard Nixon in 1972," according to PPP.

"It's impossible to say what twists and turns the American political landscape will see between now and 2012,” PPP Pres. Dean Debnam said. “What is clear is that four months ago John McCain lost to Barack Obama by seven points nationally, and at this point in time Sarah Palin trails Obama by a much greater 20 point margin."