Barack Obama has moved ahead of Hillary Clinton in Texas, according to a Rasmussen Reports survey conducted Feb. 27, but his lead equals the margin of error and there is still evidence of volatilty among Democratic voters. But this and other Texas polls still suggest the trend is in his favor.

Obama leads Clinton 48 percent to 44 percent, with 8 percent undecided. Twelve percent of voters said they could still change their minds. The margin of error is 4 points. Rasmussen notes that Clinton’s lead among Hispanic voters, a group she has counted on heavily, is down to 7 points.

Rasmussen also released results of a February 26 survey of voters in Pennsylvania, whose April 22 primary would be the next big test if Clinton is still competitive after Texas and Ohio on Tuesday. Clinton’s once-large lead over Obama in Pennsylvania has now shrunk to 46 percent to 42 percent with a 3 point margin of error. This squares with a Quinnipiac University poll published yesterday.