Why did Democrats vote by mail while Republicans voted in person?

Trump encouraged his voters to vote in person as he was afraid their mail in votes would be "mysteriously" lost. you know your vote counts when you are the person who puts it in the machine.

several States changed voting laws a few days before the election which allowed people to mail in votes after the election was over. this is the scam Trump was talking about as well as other republicans. the majority of votes for Biden were counted up to 48 hours later and after the polling stations were closed, votes were still counted but no one was there to verify what was going on.

for 2 years prior to the election, the dems led a propaganda strategy saying that Trump was going to cheat and win again. remember them complaining about removing ballot boxes and slowing the mail down?

also millions of pre-paid mail in ballots were sent out to people who didn't request them. how do we know those ballots were sent out and not filled out by democrat pollsters?

to date, the 2020 election has not been Federally investigated for fraud and chicanery. we are just supposed to believe it was fair and honest, even though Hillary said not to concede the election under any circumstances and Joe said he would lose by chicanery.

the 2020 election had more red flags than 2016 yet it didnt warrant a investigation. dems got what they wanted so there was no way they were going to investigate themselves.

To answer your question, many D's voted by mail because of the history of polling places being understaffed in poorer precincts, especially black ones, causing absurdly long wait times. That happened not so much in R precincts.

Why were mail-ins, as you said

ripe ground for Trump to claim fraud, as mail-in votes take time to be counted and could be days later.

Voting by mail has existed since the Civil War.

The demonization is a disingenuous attack on a procedure that expands voting.

Clearly there are mail in ballots for all voting groups and neither in person voting or mail-in voting is a help or a hindrance to either side.

The benefit of an accessible voting system is to the benefit of ALL voters.

A lot also has to do with COVID and being in public places. Democrats realized that was a real danger and Republicans thought it was a hoax, or no different than the flu, or a Chinese weapon, or a Fauci weapon, etc.

I've also often wondered why republicans sniff glue, do meth, and consider incest to be a normal sex life and democrats don't. Just one of those mysteries in life.

That people are swayed by the idea that voting in person is somehow less susceptible to tampering than voting by mail is precisely the level of stupidity that conservatives want to capitalize on.
Seriously, it's just another version of The Big Lie where if they claim it loud enough for long enough people will begin to believe it. Vote by mail is convenient, smart and inclusive. The silliness that the system can be overwhelmed with fraudulent paper ballots is beyond ridiculous, or that paper ballots are counted differently than in-person votes is laughable.

Because much easier to commit voter fraud vial mail-in than in-person, and the Dems are notorious for commiting voter fraud. It is why dem strongholds need so much time after election day to "count" the vote. All the republican votes are in, so they figure out how many they need, then find names from the voter rolls for those who did not vote and manufacture ballots for them for the preferred candidate. So, a lot of those mail-in dem votes are fraudulent and not real. That is just one way they cheat, They have several approaches.

I think we both know how the 2016 election would have gone down without a manufactured viral “pandemic” and standard in person voting…. Instead of voting by mail what should have happened was to have a full week and 24 hours a day if needed of in person voting but then there could be no ballots coming in from Mika’s wherever to close Biden’s gap.