Pileggi's new plan would award two votes to the winner of the popular vote statewide and then divide the remaining 18 based on the percentage of the popular vote each presidential candidate received.
Under that scenario, his memo noted, President Obama would have won 12 electoral votes to eight for Republican challenger Mitt Romney in the Nov. 6 election. As it was, Obama's five percentage-point edge in the state's popular vote gave him all 20 electoral votes.
Reached for comment Monday, Corbett spokesman Kevin Harley said the governor had not yet seen a detailed proposal and wanted to review one before taking a position.
States are allowed to legislate their method of choosing electors. The only ones not using winner-take-all are Maine and Nebraska, which award electoral votes based on the popular-vote winner in each congressional district - much like Pileggi and Corbett's ill-starred 2011 proposal.
Debate over replacing the Electoral College with a direct popular-vote system has raged for decades. Recently, states such as Wisconsin have considered changing their winner-take-all systems.
In 2011, when Pileggi and Corbett pushed a proposal to parcel out most electoral votes by congressional district, Democrats called it a brazen bid to help Republicans' chances of unseating Obama. It also took friendly fire, some from GOP congressmen wary of driving more Democratic campaign resources into close congressional districts.
State Sen. Daylin Leach (D., Montgomery), contending that Pileggi's new proposal is no better than the old one, called it sour grapes. "The remedy for losing an election is not to change the rules of that election," Leach said Monday, "but to offer more compelling candidates who actually have a compelling message."
Arneson said Pileggi's motives were not partisan. Noting critics' claim that the 2011 bill was aimed at an impending presidential election, he said, "At this point, we couldn't be farther from a presidential election than we are now."
He added: "Hopefully we can now have a straightforward and unemotional debate on the merits of this proposal."
Contact Angela Couloumbis at 717-787-5934 or firstname.lastname@example.org, or follow on Twitter @AngelasInk.