There were a lot of stupid voters but Trump didn't lose because of stupid voters. Trump lost because of extraordinary coordination of liberal groups and supporters to undermine the election. That Republicans haven't called for a congressional investigation should alarm everyone and call every coming election into question.
I can think of multiple ways to secure ballots which include the paper used to print ballots be a unique size (not off the shelves from Office Max), printed with bar codes that can be scanned only once, ultra violet dyes that would make fake ballots easily distinguishable, and a strip embedded in the paper (like currency) which would also discount fake ballots.
However, Republicans are proposing none of these things and the same tactics by the left are still in place for the next election.
Republicans will have no poll watchers or legal teams in place BEFORE the election and simply hope for the best.
What would be the point? How did that call for an investigation into Swalwell turn out? How many of the Republicans are running away from Matt Gaetz?