Speaking for me only 

Virginia is an outlier. It's simply not informative to compare Obama's single best primary performance to others, nor do such non-informative comparisons constitute evidence of a decline. However, Obama's aggregate share of the white vote has increased over the last two months. See if Armando can explain that. 

in VA's primary held on Feb. 12th, Obama got 75%

No, Obama got 63.7% of the vote. Source: New York Times.

it is also true that you can most definitely see a candidate's demographic strengths and weaknesses from primary results

No, that only goes for other primaries against the same opponent, otherwise you can't.

Obama is now running ahead of John McCain in national tracking polls. He can win the election without winning crazy people who listen to Jim Jones Armando and Jeralyn.

that's right, 50 not 48 -- just like what will be counted in the GE

Ask Harold Ickes why the Michigan and Florida straw polls don't count. Or call the wambulance. Maybe Taylor Marsh will give you a hug in exchange for help drafting a phony resume. I just don't care though.