evidence: For years, Pennsylvania Republicans have pushed against mail-in ballots being used in elections -- even seeing a challenge to mail-in ballots thrown out of court earlier this year -- but, the party is singing a different tune in the run up to the Nov. 7 elections. [...] Even former president Donald Trump, who has long been critical of mail-in ballots, -- going as far as suing the City of Philadelphia over mail-in balloting -- has flip-flopped on the issue. [...] For Democrats, he said, they will need to "streamline and fine-tune" efforts to encourage voters to utilize mail-in ballots, in order to not lose ground.