There is a debate underway about whether marijuana legalization in Colorado will lead to a more relaxed, less punitive criminal justice system in the United States, as some critics say.
Legalization advocates say that will only lead to more crime and abuse, and will have the opposite effect of the one envisioned by some conservatives.
The debate is also playing out in Washington, where President Donald Trump is making a late push for a crackdown on pot smokers.
But some observers, including The New York Times columnist Bret Stephens, are betting the opposite.
The NYT, a longtime supporter of the legalization movement, will air the presidential debates live on Twitter.
What to watch for The debates will take place at 8 p.m.
ET and 9 p.