Tuesday's testimony will include: DNI Director James Clapper, CIA Director John Brennan, NSA Director Michael Rogers, and FBI Director James Comey.
What we're watching: To date, the Senate Intel Committee has only held closed briefings on the subject. It will also release its unclassified hearing on Russian hacking next week, and has another briefing scheduled for Wednesday.
Protesters outside Supreme Court. Photo: Daniel Slim/AFP via Getty Images
The Supreme Court on Monday denied a request from Pennsylvania's Republican Party to shorten the deadlines for mail-in ballots in the state. Thanks to the court's 4-4 deadlock, ballots can be counted for several days after Election Day.
Why it matters: It's a major win for Democrats that could decide the fate of thousands of ballots in a crucial swing state that President Trump won in 2016. The court's decision may signal how it would deal with similar election-related litigation in other states.
Photos: Jim Watson and Saul Loeb/AFP via Getty Images
The Commission on Presidential Debates adopted new rules on Monday to mute microphones to allow President Trump and Joe Biden two minutes of uninterrupted time per segment during Thursday night's debate, AP reports.
Why it matters: In the September debate, Trump interrupted Biden 71 times, compared with Biden's 22 interruptions of Trump.
Illustration: Annelise Capossela/Axios