Enrique Peña Nieto is polling at 50 percent in Excélsior's survey (which ignores undecided voters). As you can see, that gives him a 21-point edge on Vázquez Mota and a 30-point advantage over López Obrador. The difference has grown marginally as well. Most polls are showing a broadly similar margin as well as a similar trend. (More here, in the "varias empresas" section off to the right.)
So...who do you like in 2018?