[Oldeconomybuyer]

...The margin of error is +/-2.7% points for registered voters, and +/-4.7% for Democratic voters...

Looks like democrat voters are still being disenfranchised or the pollsters used punch-card ballots...

[Lonesome in Massachussets]

+/-2.7% points for registered voters, and +/-4.7% for Democratic voters...

Different sample sizes. As a rule of thumb, the "margin of error" is reported as 98% divided by the square root of the sample size, implying (accurate in the first two places) that the sample was 1300 voters, 430 of whom were Democrats.

[Ole Okie]

Looks like democrat voters are still being disenfranchised or the pollsters used punch-card ballots

Pregnant chads will do it every time!

However, MOE is a function of sample size, and the dumRat sample is a subset of the overall sample. So this is expected.