Google rolled out a voter registration guide in July that also displayed state-specific information. The company says millions of people have used that tool and searches for voter registration information are up 190 percent nationwide compared with four years ago. Of course, internet penetration in the US has risen over that same time period.

Google is making the data behind its "how to vote" and "voter registration" searches available to the public, "so nonprofits and organizations promoting voter education can benefit and expand the reach of this critical information," the company says. Apply for access right here.