In a blow to President Donald Trump\u0026#039;s reelection campaign and the Republican National Committee in a crucial swing state, the Pennsylvania Supreme Court ruled unanimously on Friday that counties cannot reject mail-in ballots because voters\u0026#039; signatures do not resemble the way they signed when registering to vote.\u0026nbsp;The court\u0026#039;s two Republican justices joined their five Democratic colleagues in the ruling (pdf), which came in response to Pennsylvania Secretary of State Kathy Boockvar\u0026#039;s request for clarification of the state\u0026#039;s vote-by-mail rules.\u0026nbsp;BREAKING: Pennsylvania Supreme Court rules that election officials are PROHIBITED from rejecting mail-in ballots based on signature comparison. Nor may a party \u0022challenge based on signature analysis and comparisons.\u0022https://t.co/pBa0vyA9h3— Marc E. Elias (@marceelias) October 23, 2020\u0022[We] hold that county boards of elections are prohibited from rejecting absentee or mail-in ballots based on signature comparison conducted by county election officials or employees, or as the result of third-party challenges based on signature analysis and comparisons,\u0022 the decision stated. \u0022We conclude that the Election Code does not authorize or require county election boards to reject absentee or mail-in ballots during the canvassing process based on an analysis of a voter\u0026#039;s signature.\u0022\u0026nbsp;Boockvar\u0026#039;s office issued guidance (pdf) last month prohibiting election officials from discarding ballots due to signature inconsistency alone.\u0026nbsp;\u0022If the voter\u0026#039;s declaration on the return envelope is signed and the county board is satisfied that the declaration is sufficient, the mail-in or absentee ballot should be approved for canvassing unless challenged in accordance with the Pennsylvania Election Code,\u0022 the guidance stated. \u0022The Pennsylvania Election Code does not authorize the county board of elections to set aside returned absentee or mail-in ballots based solely on signature analysis by the county board of elections.\u0022Huge victory for free and fair elections in Pennsylvania! And on my birthday no less! :) #vote #justice #readytovote2020 #TrustedInfo2020 @PAStateDept https://t.co/q9j51urkq0— Kathy Boockvar (@KathyBoockvar) October 23, 2020Trump and Republicans had argued that matching signatures on mail-in ballots to those on voter registration rolls is necessary to prevent fraud.\u0026nbsp;Pennsylvania Attorney General Josh Shapiro, a Democrat, hailed the ruling as \u0022another win for voters.\u0022\u0026nbsp;\u0022Voters who use a mail-in ballot have their identity verified in the initial application, often using a driver\u0026#039;s license number,\u0022 Shapiro said in a statement. \u0022Pennsylvania\u0026#039;s voter identification system is safe and secure. We are protecting every eligible vote and ensuring each is counted. Make your plan to vote and we will keep doing our work to make sure your voice is heard.\u0022\u0026nbsp;Trump and his cronies are just trying to cause chaos. Don\u0026#039;t listen to their noise. Cast your ballots, and they will be: secure protectedcountedhttps://t.co/ybWxlNekOd— Josh Shapiro (@JoshShapiroPA) October 23, 2020Friday\u0026#039;s decision was the second triumph this week for Democrats and voting rights advocates in the Keystone State, which Trump won by 44,292 votes, or 0.73%, in 2016. According to the latest RealClearPolitics average of 11 national polls, Democratic presidential nominee Joe Biden enjoys just over a 5% lead over Trump.On Monday, a deadlocked U.S. Supreme Court let stand a Pennsylvania court ruling permitting the battleground state\u0026#039;s election officials to count mail-in ballots that arrive up to three days after November 3.