The skewed sampling is quite large.
But that’s not the only influence on the new WaPo/ABC poll numbers. After hiding the partisan composition numbers for the last two months, today’s poll includes that data from the last three presidential polls. Let’s take a look at the D/R/I series, keeping in mind that the D/R/I from the 2010 midterm elections was 35/35/30
Obama trails even with an 11 point edge.
- March: 31/27/36
- February: 34/23/37
- January: 32/25/36