You're lying about the constitution, and lying about the existence of election fraud. https://twitter.com/senmastriano/status/1332666825490968578

Article II, § 1 does vest in state legislatures the power to determine the manner of selecting presidential electors. Pennsylvania's legislature has done that, having determined long ago that voters get to choose the electors in a general popular election.

That election took place on November 7, and was certified on November 21, in the manner specified by the legislature by statute.

Article II, § 1 does not allow the legislature to change the rules after the election is held. To the contrary, it makes the opposite clear:

Congress has done exactly that. It said Election Day was the first Tuesday in November. The time for the legislature to direct the manner for choosing electors is over, because the time for choosing them is over, and Pennsylvania has, in fact, chosen them.

And your statements about the election having been compromised are mendacious. The Trump campaign has has plenty of opportunities to present evidence of such supposed corruption to the courts.

Yesterday's opinion by an all-Republican panel US Court of Appeals for the Third Circuit—an opinion written by a Trump appointee—made clear that the Trump campaign, at least in court, has disclaimed assertions of fraud. It quotes @RudyGiuliani on that:

. @SenMastriano, you're a disgrace, and beneath contempt.