Who Worries Encinas in EdoMex?

Alejandro Encinas intimated that of all the possible candidates for governor in Mexico State, the only one who could defeat him is Alfredo del Mazo Maza, who is also the second cousin (I think) of Enrique Peña Nieto. Encinas also said that opinion polls have him (Encinas, I mean) showing 40 percent support.