Texas is like California in the Dem primary for Obama but maybe worse. Texas has more blacks, but the Hispanics are probably more conservative/suspicious of blacks than in California, and the Texas Dem primary is largely sans upper middle class Anglos, and probably has more rednecks still voting in it. Unless Hillary collapses, it's all hers.
I'll bump up my (still incomplete) analysis on the Texas Senate Districts for your perusal sometime later today.
I'll also fill in my anecdotal reports from largely Hispanic (with redneck whites) east Houston that I get second-hand from a strong familial source. In other words, when my father tells me of a Hispanic/redneck white he's met who is supporting Obama, I'll let you know. 
I doubt enough redneck whites are still democrats to have a significant effect on the Dem primary. Well, except maybe a few of the women. Remember also that in Texas, lower-middle class white doesn't necessarily equate to redneck. Lower class white however, probably does. However most rednecks would never vote for Obama (obvious reasons) OR Hillary (they think she's an atheist lesbian communist). Rather they'll turn out in droves to vote for Huckabee.
