Sen. Dianne Feinstein says she won't run for reelection in 2024

Democratic Reps. Adam Schiff and Katie Porter have announced their 2024 Senate bids for her seat. Reps. Ro Khanna and Barbara Lee may also be considering a run to replace Feinstein.

Feinstein is hailed for her historic firsts

Senate Majority Leader Chuck Schumer applauded Feinstein for her impactful career in the chamber, breaking "innumerable glass ceilings" along the way. Feinstein, for example, was the first woman to chair the Senate Select Committee on Intelligence and later, the first woman to serve as the top Democrat on the Senate Judiciary Committee.

"As the longest-serving senator from California, Dianne Feinstein's long, distinguished career stands out for the sheer width and breadth of what she accomplished," Schumer said in a statement. "Throughout her career she has always been pragmatic in her approach to every issue and has our country and her beloved California top of mind."

She served a host of other firsts: the first woman president of the San Francisco Board of Supervisors, the first woman mayor of San Francisco and the first woman elected senator of California.

She has a lengthy legislative record

One of Feinstein's major pieces of legislation that she authored was the Federal Assault Weapons Ban, enacted in 1994. The law prohibited the sale, manufacturing and import of military-type assault weapons; it expired in 2014.

While serving as the chair of the Senate Intelligence Committee she released a five-year review of the CIA's detention and interrogation programs. In the report's executive summary, Feinstein wrote that it was her "personal conclusion that, under any common meaning of the term, CIA detainees were tortured" during a time period that followed the 9/11 attacks.

In 2020, Feinstein received criticism from liberal groups following the confirmation hearings for President Donald Trump's Supreme Court nominee Amy Coney Barrett. She hugged Republican Sen. Lindsey Graham at the conclusion of the Senate Judiciary panel's hearings, saying, "This has been one of the best set of hearings that I've participated in."