Given the current situation? Somewhere between Likely R and Lean R.
Trump 48
Clinton 44
Johnson 7
Stein 1
Voted likely R, but I would not be surprised to see Texas within a 5 point margin this election (Lean R).
Dems still have a lot of work and resources to do in terms of voter registration, building strong county level organizations in many parts of the state.
Even assuming Republican support collapses in 2016 among Tejanos and Latinos in Texas, along with women in the Republican suburbs of Houston, DFW, SA, and Austin, it's hard to see the state as a tossup without a significant national Democratic investment in the state to be able to push the ball over the finish line, unless White evangelical Christians start abandoning Trump en masse.
I have long posited on this forum that Texas would much closer than most expected this year, and as a forum resident of the Lone Star state, certainly hope that it comes close and that newly energized voters will remember their first vote or first vote for a Democratic Presidential candidate and follow that course in 2020.