he never complained about mail in voting before april.

repubs *bragged* about their mail in voting operation for years. even in 2018...they got out to a big lead in some states because of their early mail ballot returns.

but once states made it easier to request an absentee ballot and dems shifted more to voting by mail in the primaries...there was a big shift in turnout level that clearly spelled good things for dems.

then when dems wrote up a bill in the house to shore up the mail in voting infrastructure for states...trump started complaining that dems had stuff in the bill that would increase voting to levels that republicans would never win again. thats when he really started going hard against mail in voting.