The 84-year-old's announcement comes at a moment of soul searching for the Democratic Party, after the GOP swept both chambers of Congress and won the presidential election in November.
But the senior senator said twice on Sunday that no gun control legislation would have stopped the mass shooting.
The mere implication that Trump could be a "good president" drew the ire of state Senate president Kevin de León, whose recent two-day trip to Washington was seen as laying the groundwork for a potential Senate run.
"Right now we are seeing one president changes actions of a president that came before him and that would happen in this area", the senator said.
Feinstein's old-school political sensibilities and foreign policy could be at odds with California, where increasingly young and diverse voters have demanded all-out opposition to Trump. "We are better off with her leadership and I look forward to continuing to fight together for California in the Senate".
On Sunday, Feinstein hinted in a national television interview that she was likely to run again, telling NBC's "Meet the Press" that she was close to a formal decision.
Los Angeles Mayor Eric Garcetti is reportedly hosting a fundraiser for Feinstein.
Brandon Weeden keeps getting hired, now with Titans
Mariota suffered the hamstring injury on his second-quarter touchdown run in the Titans' 57-14 loss to the Texans on Sunday. He started 20 games in Cleveland, going 5-15 while throwing more interceptions than touchdowns.
Las Vegas shooting suspect Stephen Paddock: What to know
Investigators reached Marilou Danley early Monday but do not believe she was involved in the shooting at this time . In a statement read by her lawyer, Ms Danley explained that she didn't know Paddock was planning a mass shooting .
Hatch Bill To Renew CHIP Funding Passes Senate Committee
We're certainly not taking anything for granted. "We're still holding out hope for a bipartisan deal", Hand said Monday afternoon. Nine million kids across the country may be uninsured after congress allowed the Children's Health Insurance Program to expire.
Air France flight with engine damage makes emergency landing
The Air France flight diverted to Goose Bay airport, where there is also a Canadian Forces Base, according to the airline . Another said they heard a "loud thud and a lot of vibration" before looking out of the window at the horrific scene.
Official Renders Of The Pixel 2 And Pixel 2 XL Leaked
In order to watch the Google Pixel 2 and Pixel 2 XL launch live on October 4 , you will have to log on to their YouTube channel. Google is all set to take the wraps off the Pixel 2 and Pixel 2 XL smartphones at an event on October 4 that is tomorrow.
Huge demonstration against Catalan independence in Barcelona
Some of Catalonia's biggest businesses began taking steps to transfer their registered headquarters to other cities in Spain. This weekend, Rajoy told Spanish newspaper El Pais that any declaration of independence by Catalonia would be rejected.
Death toll rises to 15 in Balochistan shrine blast
Sarfraz Bugto, the provincial home minister, said "terrorists have shown their inhumaneness by attacking innocent civilians". DPO Jhal Magsi said a constable was killed while attempting to stop the suicide bomber from entering the shrine.