Here are the links supporting the statistics from the "Electoral Reform Now!" video. If you have an issue that is near and dear your heart, research what the general support for that issue is and post it in the comment section!
Maternity leave- 74% favor paid parental leave
Prison reforms (various types) ranging from 60% to 85%, depending on reform
Closing gun show loophole: 90%
Legalizing marijuana: 60%
Getting money out of politics: 84%
Taxing high income earners more: 61%
Using federal funds for universal prek: 70%
Path to citizenship for illegal immigrants: 84% of Americans, including 76% of Republicans.
Healthcare: 60% of Americans favor replacing Obamacare with “a federally funded program providing insurance to all Americans.”