I have been trying for 2 hours to get to the methodology link at the end of NBC’S article. I keep getting that the page is not available.
In their initial methodology in January, they did not reveal data for male/female or most other demographic items. It says it is giving data on those who ‘say’ they are registered voters. They don’t report any effort to determine the reliability of that self-report as most survey firms use when determining likely voters. IOW, they take them at their word that they are registered.
If they have a preponderance of females in their data set, then they have skewed their results. We don’t know because they aren’t saying.
Good luck. They deliberately bury this stuff because they know they are jimmying the results.