I expect some very close Senate races next month, and this will mean some potential Dem fraud similar to Franken's election in 2008. Dems in Missouri, Illinois, and Florida will not hesitate to "find" more ballot boxes like they did in Washington state in 2006 or Minnesota in 2008. But the race will have to be close, within a couple thousand votes and about 0.1% or so. Even the Democrats won't try and cheat their way more than one-tenth of a percent.
Democratic cheating in Illinois is legendary, by the way; in Florida the cheating was fairly rampant in Dade County during 2000; I recall some precincts with greater than 100% (as high as 105%) turnout.
How does this sound for a possible fix. There are documented cases of military ballots that have not been accepted because they arrived too late.
I propose that an ample amount of time is given for votes to be collected, but once counting begins, any "found" votes, are to be disallowed. Another piggyback provision would be the prosecution for voter disenfranchisement, when anyone responsible for turning in votes, does not do so in a timely manner.