We know that Mrs Clinton's chances increase to the extent that our Latino citizens vote. We also know that a recent media narrative suggests that enthusiasm for her in Spanish-speaking communities has lagged. This may have changed and perhaps as a result of Monday night's debate.
ElectoralVote, a poll aggregation site (EV itself does not conduct polls.), like a number of other excellent sites, reports national and state polling results several times daily, based on the combined results of ongoing polling from many polling organizations. Aggregation sites also rate various polling organizations based on past performance, whether or not they sample various demographics equally, and based on whether or not pollsters have or have had connections with political organizations. Perhaps the most well known aggregator is Nate Silver's 538.com.
ElectoralVote notes this morning that
"...there has been a sizable increase in the number of [Google] searches for information about voter registration. The lion's share of those searches come from heavily Latino markets in Texas, California, Nevada, Arizona and Florida. Some of these areas have, historically, had the lowest rates of voter participation in the country before 2016. Needless to say, this is indirect evidence, but in the past a correlation between Google searches and actual registrations has been documented. So, there is a good chance that Donald Trump's debate performance—highlighted by his attacks on "Miss Housekeeping" Alicia Machado—brought new Latino voters into the Democratic fold."
There's no way of knowing, now, whether or not this will continue and whether or not it will affect the November results. Given Mr Trump's continuing tweet tirades about Ms Machado, as late as this morning, the possibility seems increasingly plausible. Florida, Arizona, Texas, California, and Nevada account for 139 electoral votes.