Regarding the issue of 1.8 million ballots mailed out and about 2.5 million returned, this number is in dispute and we really need to get an accurate assessment of what is REALLY TRUE before we continue presenting it as solid argument for fraud.
This article published before the election suggests that about 3 million ballots were mailed out:
“More than 78% of Pennsylvania voters who requested a mail-in or absentee ballots have already cast their votes by Election Day eve.
Secretary of the Commonwealth Kathy Boockvar said Monday 2,414,349 ballots that have been returned. Among those mail-in ballots, 1,596,195 – or 66% – came from Democratic voters, while 555,805 – or 23% – are from Republican voters. The remaining 262,349 (11%) came from third-party or unaffiliated party registrants.”