Weekly Standard. Rush Limbaugh with more polish. When President Obama was up 5 the right-wingers claimed that the pollsters were weighting things 6 points in his favor. When he is up 10 the right-wingers said that the pollsters are cheating by 11 points.
If there has been any media bias it has been that the media want people paying attention to the Presidential race instead of tuning out. Such would be so no matter who was ahead. If the President had been way ahead back in July the media would have been playing up the chance of a comeback for the challenger. If it were the other way they would have been playing up the chance that the President were going to imitate the Truman victory.
Recent polls suggest a Romney collapse. Constituencies that went for John McCain don't support Romney as much. Maybe the elderly and near-elderly distrust privatization of Social Security and Medicare. Maybe people who like a strong defense don't like reckless saber-rattling or diplomatic bumbling.
Quinnipiac is a very good pollster. It polls few states, but it polls the ones that matter. Florida and Ohio are consistently very close to the US as a whole in their voting. on Presidential elections. Ohio has voted 'wrong' once since WWII -- and then by a narrow margin in a narrow election (1960).
Do you know what happens when one side wins Ohio by 10% or more?
1988 Bush 55.0% Dukakis 44.2% in Ohio -- Bush 53.4% Dukakis 45.7%
1984 Reagan 58.9% Mondale 40.1% in Ohio -- Reagan 58.8% Mondale 40.1% nationwide
1980 Reagan 51.5% Carter 40.9% in Ohio -- Reagan 51.8% Carter 41.0% nationwide
1972 Nixon 59.6% McGovern 38.1% in Ohio -- Nixon 60.7% McGovern 37.5% nationwide
It ain't pretty for the loser.
Face it: Barack Obama became President with lots of question marks about him. He has resolved almost all of them to his advantage.