Here are some key questions surrounding the upcoming presidential debates.

On Tuesday night, the two men looking to be Virginia’s next governor return to the debate stage.

Glenn Youngkin and Terry McAuliffe are set to take place in a debate hosted by NBC Washington at Northern Virginia Community College moderated by Chuck Todd, host of “Meet the Press.”

The final debate between President Trump and Joe Biden started at 9 p.m. Thursday at Belmont University in Nashville. ORIGINAL STORYWith just 12 days until the election, it’s the final chance for each candidate to make his case to a television audience of tens of millions of voters. The debate will be moderated by NBC’s Kristen Welker. In an effort to curtail interruptions this time, the Commission on Presidential Debates announced that Trump and Biden will each have his microphone cut off while his rival delivers an opening two-minute answer to each of six debate topics. The mute button won’t figure in the open discussion portion of the debate.

Democratic U.S. Sen. Mark Warner of Virginia and his Republican opponent, Daniel Gade, sparred over how best to respond to the coronavirus and other health care issues Tuesday in their third and final debate. Warner blasted Gade for backing the president and being unrealistic about what’s needed to defeat the virus and restart the economy. Gade repeatedly attacked Warner for voting against GOP coronavirus relief legislation, which Gade said was desperately needed in Virginia. On prescription drugs, Gade said Warner can’t be trusted because he’s taken significant donations from the pharmaceutical industry. Warner said Gade wanted to repeal the Affordable Care Act and end protections for people with preexisting conditions, something Gade strenuously denied.

There was briefly another participant swooping into Wednesday night’s vice presidential debate. For several minutes, a fly landed in Vice President Mike Pence’s hair, not moving as he answered questions about racial injustice and whether justice has been done in the death of Breonna Taylor. Conversation about the fly briefly dominated corners of Twitter, where debate watchers discussed their distraction and inability to focus on Pence and California Sen. Kamala Harris' answers. Wednesday night’s intruder wasn’t the first to take center stage at an election-year debate. In 2016, a fly briefly landed between Democratic nominee Hillary Clinton’s eyes during a town hall-style debate with now-President Donald Trump.

On Wednesday night, Vice President Mike Pence and Sen. Kamala Harris took center stage. The two took part in this election’s vice presidential debate at the University of Utah in Salt Lake City, starting at 9 p.m. EDT. The debate was set to last 90 minutes, have no commercials and be divided into nine topical segments of about 10 minutes each. Rules stated that each candidate would have two minutes to respond to the moderator Susan Page’s opening question before she facilitated a deeper discussion on the topic. Page is USA Today’s Washington bureau chief.

On Tuesday night, President Donald Trump and Democratic challenger Joe Biden took part in their first debate. The debate was held at Case Western Reserve University and Cleveland Clinic in Cleveland, Ohio. The 90-minute, commercial-free program was divided into 15-minute topical segments opened with a question from the moderator. Each candidate had two minutes to respond before the moderator facilitated discussion on the topic.