Be specific. Which states had issues?

What exactly are you claiming? The whole election is invalid?

Why did R gain seats in the House? Can you explain that? A rigged election that only applies to the top line?

You are pushing conspiracy theory, no matter how you try to dress it up.

How would mail-in ballots be a mistake this cycle, but not others?

Oregon and Washington have been voting entirely by mail for decades without any apparent problems.

Because this time one side asked their voters not to use mail-in ballots and vote in person. So mail-in ballots tend to be skewed to the other party.

It's nothing more than a fig leaf to justify tossing ballots that are predominantly for one party in most states.

Can you define "inaccuracy"? You mean like someone stole another person's ballot and fraudulently cast it?

The inaccuracy is that people who normally had their vote suppressed were able to bypass the voter suppression efforts this year and turn out. This caused statistical anomalies like a lot of inner city people actually voting for a change. This is why you see many states with Republican legislatures racing to tighten mail in ballot restrictions before the next election.

Who would have thought that people would vote if it didn't require you to stand in line for two to three hours during a workday?

Voting during the week is one of those absurdities of ancient anglo-american systems that should simply give way. One of the things that postwar European countries really got right is voting on weekends, if anything because elections should be a celebration of democratic entitlements and of the people who gave their life to establish them as universal human rights.