Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
Vote.org - Everything you need to vote
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Voatz - Online voting secured by the blockchain
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Vote Absentee - A guide to absentee voting in the 2018 midterm elections.