Your generalizations above about Obama supporters appear to be out of date.
In yesterday's Potomac Primaries Obama's support increased across the board in all major groups by about 10 percentage points. All groups include senior citizens, women, white men, young adults, Mexican-Americans, and blue-collar voters. The only group that maintained support for Clinton appeared to be rural voters in Virginia.
It's boring, I suppose, to actually look at or listen to voting statistics before saying what you'd like to say but why not give it a try!