[murron]

Registered voters polls always lean heavily Democrats.

[Political Junkie Too]

There is a difference between samples that are skewed Democratically, and respondents who answer Democratically. With a 48% D sample, the answers will definitely lean towards the Democrat position,

How the sample population was constructed shoudn't matter based on registered or likely voters, unless they think that 48% of registered people are Democrats but only about 35% are likely to vote. If that's the case, then why care what the 13% think?

-PJ