No official results are in - none. Yet both the presidents of PAN and PRI, respectively, claim their candidate won the election with, to be sure, an "irreversible advantage."
Politics have become, to a certain extent, a race to the bottom, where each party simply calls out that it won in a better-safe-than-sorry fashion, clearly not trusting the process enough to leave this job to the official electoral authorities, yet in the process showing absolutely no regard for the democratic process or the institutions actually charged with declaring a winner.
Think 2006: First AMLO, and then Calderón, claimed to have won the election - even both had sworn to await the official results. Do they never learn, or do they simply not care?
This behavior is truly irresponsible, and only contributes toward creating more and more mistrust.