The new poll attributes Obama’s surge to self-described independents and Republicans who said they plan to vote in the Democratic primary. Those voters amounted to 22 percent of respondents and went for Obama almost 3-to-1. This is a demographic that helped fuel Obama wins in previous primaries, exit polls have shown.
Among Democrats, Clinton topped Obama 47 percent to 42 percent, the poll found.
I'm guessing the poll we linked to earlier took into account only confirmed Democrats voting in the primary (though it's not exactly clear) as those numbers mirror more closely the 47-42 percent in this poll.
Still, the general conclusion one can take from all this is that Obama is very close, and with the momentum in his direction, an upset in Texas is within his reach.