Here are 3 big things you need to know—

One — Transportation Secretary Sean Duffy is warning of more air travel disruption as the government shutdown continues.  During an appearance on CBS' Face the Nation, Duffy says passenger safety remains the top priority.  He predicted more slowdowns and delays along with flight cancellations due as air traffic controllers work without.  Major airlines have begun to call on Congress to end the shutdown.

Two ---  New York City mayoral frontrunner Zohran Mamdani is getting praise from Barack Obama.  The New York Times says the former President called Mamdani Saturday and spoke for nearly half an hour, and told him he's invested in his success after the election. Polls show despite tightening numbers; Mamdani remains firmly in the lead ahead of Tuesday's election.