Democrats kept the Senate this year, but 2024 may be harder

Senate Majority Leader Chuck Schumer, D-N.Y., center, welcomes Senator-elect Peter Welch, D-Vt., left, and Senator-elect John Fetterman, D-Pa., whose victories helped give Democrats the majority in the next Congress, at the Capitol in Washington on Nov. 15. (AP Photo/J. Scott Applewhite, File)

NEW YORK — Democrats celebrating a successful effort to keep control of the U.S. Senate this year will soon confront a 2024 campaign that could prove more challenging.