How accurate are claims that the US election is rigged?

Encyclopedia of Opinion

Question: How accurate are claims that the US election is rigged?
Position‹3 of 3: Claims that the US election is rigged are not accurate at all

Claims that the US election is rigged are not accurate at all. Electoral and postal ballot fraud are often overstated and are very rare. The Trump administration's criticisms of the US election's integrity stem from fears of losing.

Supporting arguments · 4

Trump’s criticisms of the integrity of the 2020 US election are due to his fear of losing
Claims that the US election is rigged are not accurate at all. The Trump administration is scared of losing the 2020 presidential election and therefore are bringing the integrity of the election into question.
So-called claims of "double-voting" are due to clerical errors
Claims that the US election is rigged are not accurate at all. The rate of potential double-voting is extremely low, and can therefore be explained entirely by clerical errors rather than voter fraud.
Electoral fraud is extremely rare
Claims that the US election is rigged are not accurate at all. The claims of the Trump campaign regarding electoral fraud are often made without much evidence, and are therefore questionable at best.
Postal ballot fraud is a conspiracy theory
Claims that the US election is rigged are not accurate at all. Voters are far more likely to make mistakes when they cast postal ballots. Claims that postal ballot fraud exists are inaccurate and are based on conspiracy.