First, final returns have never been available in one day. Results reported the night of and day after are preliminary, and the canvassing process (essentially

First, final returns have never been available in one day. Results reported the night of and day after are preliminary, and the canvassing process (essentially the routine audit and resolution of abnormal ballots like provisionals) routinely takes weeks. Second, the US has not switched away from paper ballots. Only a minority of states use DRE (direct-recording electronic) voting today, and a minority of those use DRE without paper trail (the number of these systems is decreasing with time as well). The most common voting system in the US is precinct tabulation, in which paper ballots are cast and counted on site, then retained for audit. DRE voting was only really introduced to the US as a result of the short-timeline requirements of the Help America Vote Act of 2002, which required disability-accessible voting be available in all precincts. At the time, DRE machines without paper trail were the most affordable option that met accessibility requirements, and most states have very little money to spend on their voting equipment. In large part because of controversy around DRE machines, DRE machines with voter verifiable paper audit trail (DRE/VVPAT) and paper ballots with accessible ballot marking devices (BMDs) are now the norm for new systems. States still using DRE without VVPAT are generally only using it because they have not been able to afford to replace equipment.