Nevada
Requirements
- U.S. citizenship 
- Continuously have resided in Clark County for at least 30 days and in your precinct for at least 10 days before the next election 
- At least 18 years old by Election Day (If you are now 17 years of age, you may "preregister.") 
- No court has declared you to be mentally incompetent, but if your legal capacity has been restored, you meet eligibility requirements. 
https://www.clarkcountynv.gov/election/Pages/RegKnow.aspx
Voter Registration Forms
Election Info
ID Required: No
Same-Day Registration: Yes
Deadlines
New Voter Registration (Online): October 29th
New Voter Registration (In-person/Postmarked): October 6th
Absentee Ballot Request By: October 20th