Every source cited on this claim, counted once at its highest evidence strength and grouped by the side it supports. Generated from this page's own evidence rows — the same records the verdict is computed from — so the chart and the score cannot disagree. Strength labels follow the scoring methodology.

View figure at source: The 2020 Election: Mail ballots, rejected ballots, and voter access

Brennan Center chart comparing mail-ballot rejection rates across states in the 2020 election, highlighting procedural rejections and variation in voter access

The clearest visual for the access side of the debate: it shows that eligible voters can lose effective participation because of signature, witness, postmark, deadline, and other procedural requirements, with rejection rates varying substantially across jurisdictions.

View figure at source: Casting, Rejecting, and Curing Vote-by-Mail Ballots in Florida’s 2020 General Election

Florida 2020 vote-by-mail figure showing the numbers or rates of ballots cast, rejected, and cured, with breakdowns by county or voter characteristics

This is the most directly relevant administrative-process figure in the evidence: it makes visible the pathway from ballot submission to rejection and possible cure, showing how voting access can be lost without any allegation of fraud.

View figure at source: The impact of vote-by-mail on turnout and vote share

PNAS chart estimating the effect of universal vote-by-mail on turnout and vote share across states or elections

A landmark causal study for the participation side of the debate: it shows that the effects of vote-by-mail are context-dependent and often modest in aggregate, while helping distinguish population-level turnout effects from the individual burden imposed on voters who rely on mail access.

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