Gun buyers are required to submit to a background check through the National Instant Criminal Background Check System (NICS)...The NICS has conducted more than 300 million checks since launching in 1998, leading to over 3 million denials.
I'm assuming you know that first line is not true. The vast majority of gun sales are private and untraced. I sold a 357 handgun out of my trunk in a McDonald's parking lot, lol. I've bought and sold hunting guns off Craigslist and classified ads. Background checks, that's hilarious. The 3 million gun buyers that failed the background check just bought what they wanted at the next gun show.
But the op was about facilitating every citizen's right to vote, If all Americans embraced that right as dearly as some embrace their '2nd amendment right', we would not be having this discussion.