Yeah--- don't see it being a factor in Iowa of all places this year, but one might imagine CO/NV/NC/FL in particular would have been good targets to start early in for voter registration.
Maybe this was going on behind the scenes before, and wasn't widely reported at the time, but the Clinton campaign did have a much better and sophisticated ground game in those four states for several months, and Latino voter registration should surely have been a prime goal of those state teams.
Not exactly sure what Clinton is doing, but major outside groups invested heavily in minority/Hispanic outreach this year. Immigrant Voters Win PAC has committed, I believe, around 15 million dollars to registering voters in CO/NV/FL. The DA have also committed pretty heavily
(apparently) to Hispanic GOTV, along with the 55+ million labor/Steyer pac
For Our Future PAC. Then groups such as
Everybody Votes,
Every Citizen Counts has big money going towards GOTV/voter access themselves. We'll have to wait to see in Oct. how much of the tens of millions committed actually materialized, but much was coming from the likes of Soros and Steyer, so I'm sure things are working smoothly now. Traditional groups like Mi Familia Vota lost out on funding though because liberal donors apparently see them as ineffective and do not like the non-partisan aspect of their operations, but similar, if not more funding is going elsewhere.
Also, Anti-Trump Republican commits big bucks for FL Hispanic registration:
http://www.politico.com/states/florida/story/2016/09/top-florida-republican-donor-to-pump-2-million-for-hispanic-voter-registration-105631All in all, there seems to be
huge money going into GOTV this year. Steyer himself went from mass ad spending to mass GOTV efforts, upwards of 50+ million dollars.