President Donald Trump shunned formal debate practice Tuesday, holding another of his big rallies — this one in Erie, Pa. — two days ahead of the final presidential debate that may be his last, best chance to alter the trajectory of the 2020 campaign. Democrat Joe Biden took the opposite approach, holing up for debate prep at his home in Delaware. In the lead-up to Thursday's faceoff in Nashville, Trump is trailing in polls in most battleground states as he works to pull off a repeat of his come-from-behind 2016 victory. He is increasingly relying on his signature rowdy rallies to deliver a closing message to voters and maximize turnout among his GOP base. The Commission on Presidential Debates has unveiled a rules change meant to reduce the interruptions that plagued the first debate last month. That encounter was dominated by Trump's interruptions and determination to talk over Biden. This time, Trump and Biden will each have his microphone cut off while his rival delivers an opening two-minute answer to each of the six debate topics. The mute button won't figure in the open discussion portion. Before leaving the White House, Trump taped part of an interview with CBS' "60 Minutes" that ended acrimoniously. On Twitter, he declared his interview with Leslie Stahl to be "FAKE and BIASED," and he threatened to release a White House account of it before its Sunday airtime. Biden, who taped his own interview with "60 Minutes" on Monday, had no public events on Tuesday.Associated Press