Scott Wiener, D-San Francisco, after her housing measure was approved by the state Assembly on September 14, 2017, in Sacramento, Calif. Democrats are planning for it to be Senator Toni Atkins of San Diego, a former Assembly speaker.
Barred by term limits from seeking reelection, de Leon has not said exactly when next year that he will officially relinquish his leadership helm. Dianne Feinstein, a fellow Democrat.
"I'm pleased to announce our caucus is unified in support for Sen".
De Leon says Democrats are unanimously supporting San Diego Democrat Toni Atkins to replace him as Senate President Pro Tem.
He said Atkins will be the first woman to lead the California Senate.
In her own statement, Atkins said California's example is more important than ever, given "national divisions".
"Today, I am humbled by the trust my colleagues have placed in me, and I intend to earn that trust every day by working tirelessly and inclusively to keep California a place of opportunity for everyone", Atkins said in a statement in which she also praised De León.
Atkins served on the City Council from 2000 to 2008, representing Hillcrest and North Park.
Atkins, 55, was Assembly speaker from May, 2014 to March, 2016, during which time she co-authored a $7.5 billion water bond approved both by the legislature and voters. Voters sent her to the Senate for the first time a year ago.