Over the period of April 12 - July 1, 662 respondents to the Daily Kos/SEIU/PPP State of the Nation poll were reached at a Texas phone number. Among these respondents, Obama and Romney were tied 47-47. (Please note that this is an aggregation of interviews from the weekly poll, not a stand-alone poll.)
Seriously?? Yes, but it's highly unlikely to hold up until election day, for reasons discussed below, and it's more favorable to Obama than other polls.
The two stand-alone polls from the same time period also show a relatively tight margin among registered voters. Texas is a Tossup at least by New York Times standards, based on this result and the two other polls with Romney +7 and Romney +8, for an average of Romney +5. (New York Times lists CO, NV, and PA as Tossups, with a polling average of Obama +5 or more.)
Of course, this is a poll of registered voters. Typically, the demographics shift towards Republican voters by a few points among actual voters in Texas.
How did this happen? It's not a demographic shift compared to 2008, but rather Romney's lack of popularity among whites. While Republicans have solidified behind him (even those who don't like him) Independents and Moderates have shifted towards Obama.
Similar numbers were seen in early 2008, but it didn't last. By summer 2008, McCain had pulled solidly ahead. So keep that in mind. But it does seem reasonable to think of Texas as Lean Red instead of Solid Red for now.
Details below, including playing with numbers to see what it would take for Obama to win in November. What is interesting is that support from whites doesn't need to be nearly as good as we see in this poll for Obama to outright win Texas, if the Texas Latino community voted at the same rate as Latino communities in Florida or California.