Pew apparently has Romney leading Obama 49-45.

[cinyc]

Did Pew conduct any polls in 2008?

Yes.  And even in 2008, their polls tended to be all over the place, showing larger deficits than other pollsters.

[cinyc]

^ Yeah, the internals pretty much erase any worries I had about this.

I mean, look at this. 2/3 of respondents over 50? Am I misreading this?

That's the raw data - and having a large percentage of 50+s in a polling sample is pretty common.  Which group is more likely to be home during the daytime to answer a phone?  Pew and most other pollsters then weigh the sample for things like age, race and geography.  In fact, Pew says:

"The combined landline and cell phone sample are weighted using an iterative technique that matches gender, age, education, race, Hispanic origin and nativity and region to parameters from the March 2011 Census Bureau’s Current Population Survey and population density to parameters from the 2010 Decennial Census."

[cinyc]

I'm unsure how this poll is weighted but 83% of the respondents here were white, way too high to be legit. I know its weighted but I'd like to see more. Additionally, the number of southerners is really high and white southerners well, vote a lot differently than whites elsewhere.

Again:

"The combined landline and cell phone sample are weighted using an iterative technique that matches gender, age, education, race, Hispanic origin and nativity and region to parameters from the March 2011 Census Bureau’s Current Population Survey and population density to parameters from the 2010 Decennial Census."

So no.