KEY POINTS
  • Sen. Dianne Feinstein of California announced she will retire at the end of her current term.
  • Feinstein, 89, is the oldest sitting U.S. senator and the longest-serving senator from her state.
  • Reps. Adam Schiff and Katie Porter, both California Democrats, have already launched campaigns for Feinstein's Senate seat.
Sen. Dianne Feinstein, D-Calif., listens to Peiter Mudge Zatko, former head of security at Twitter, testify during the Senate Judiciary Committee hearing titled Data Security at Risk: Testimony from a Twitter Whistleblower, in Hart Building Tuesday, September 13, 2022. 

Sen. Dianne Feinstein of California announced Tuesday that she will retire at the end of her current term, setting up a major Democratic competition for her coveted seat.

Feinstein, who at 89 is the oldest sitting U.S. senator and the longest-serving senator from her state, said she intends to "accomplish as much for California as I can through the end of next year when my term ends."