No number of stealth voters can overcome the Democrat Big City manipulation of the vote count. In each state the big cities report last and the Dems know how many votes they have to add to the count. It was done that way in a few states in the past. It will be done that way in fifty states in November for a Democrat 49-50 state blowout unless forestalled.
I have the same concerns. The 2018 midterms was a tune up.
They flipped 6-7 seats in CA after election day and the GOP did nothing.