Not that I care about British Elections but thank-you for enlightening me regarding the detailed enforcement of your electoral integrity.
As a matter of note American elections are carried out by States here, and thus you may say we have 50 different elections going on at the same time. Of which there is only gross abuses in a few states.
That is of course not counting the unavoidable abuses that is a direct result of Federal usurpation such as the 1993 Motor voter[fraud] act.
I dont know the particulars of US elections either, I'm just basing my comment on the fact that whenever such elections are in the news a substantial number of people on these boards moan about "the dead voting" and various other electoral inconsistencies.