Booker snags first Senate endorsement
© Greg Nash
Sen. Bob Menendez (D-N.J.) endorsed fellow New Jersey Sen. Cory BookerCory BookerEmanuel to take hot seat in Senate confirmation hearing Senate GOP signals they'll help bail out Biden's Fed chair Defense & National Security — Military starts giving guidance on COVID-19 vaccine refusals MORE's (D) presidential bid on Friday, making him the first senator to endorse a colleague in the party's crowded 2020 race. 

"I can't think of anyone better to represent and unite the American people. Cory makes a great friend, and will make an even greater president. I can't wait to support you on this journey—I'm all in!" Menendez said in a tweet on Friday.  
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Booker made his long-anticipated announcement that he was running for the party's 2020 nomination Friday morning, the first day of Black History Month.
 
Menendez's endorsement of Booker isn't a surprise. The two New Jersey lawmakers have been close partners in Congress. Booker also testified on Menendez's behalf during his corruption trial in 2017. 
 
Though Menendez is the first senator to endorse a fellow senator during the 2020 cycle, some lawmakers have thrown their support behind other candidates. Sen. Dianne FeinsteinDianne Emiel Feinstein Ban on new offshore drilling must stay in the Build Back Better Act Senate GOP signals they'll help bail out Biden's Fed chair Jane Fonda to push for end to offshore oil drilling in California MORE (D-Calif.) said last month that she would back former Vice President Joe BidenJoe BidenWhite House: Window for finalizing sweeping budget package 'closing' Jayapal says tuition-free community college 'probably won't' be in spending plan Jan. 6 panel votes to hold Bannon in contempt MORE if he ran. Feinstein's California counterpart, Sen. Kamala HarrisKamala HarrisAre supply chain disruptions the beginning of the end of globalization? Harris to campaign with McAuliffe in Virginia Harris to highlight drought, climate change in Nevada trip MORE (D-Calif.), is also running for president and won Rep. Ted LieuTed W. LieuLet's build a superhighway in space Hillicon Valley — Presented by American Edge Project — Americans blame politicians, social media for spread of misinformation: poll Democrats urge federal agencies to address use of cryptocurrencies for ransomware payments MORE's (D-Calif.) endorsement. 
 
Several Senate Democrats have already announced White House bids, including Sens. Kirsten GillibrandKirsten GillibrandOvernight Energy & Environment — Biden makes return to pre-Trump national monument boundaries official Biden signs bill to help victims of 'Havana syndrome' Lawmakers using leadership PACs as 'slush funds' to live lavish lifestyles: report MORE (D-N.Y.) and Elizabeth WarrenElizabeth WarrenDemocrats narrow scope of IRS proposal amid GOP attacks Overnight Health Care — Presented by Carequest — FDA moves to sell hearing aids over-the-counter FDA proposes rule to offer over-the-counter hearing aids MORE (D-Mass.), or are viewed as potential 2020 contenders like Sen. Sherrod BrownSherrod Campbell BrownAmerica can end poverty among its elderly citizens Senate GOP signals they'll help bail out Biden's Fed chair Building back better by investing in workers and communities MORE (D-Ohio) and independent Bernie SandersBernie SandersWhite House: Window for finalizing sweeping budget package 'closing' Jayapal says tuition-free community college 'probably won't' be in spending plan Progressives see budget deal getting close after Biden meeting MORE (Vt.), who caucuses with Democrats. 
 
Senate Minority Leader Charles SchumerChuck SchumerFixing Congress requires fixing how it legislates Beware the tea party of the left Bottom line MORE (D-N.Y.) indicated last month that he was not yet ready to endorse one of his party's White House hopefuls. 
 
Asked if he would support Gillibrand, Schumer told reporters that they work "very well" together, but he was not "mixing in" the 2020 fight. 
 
"I have said to every candidate who has asked me, let a thousand flowers bloom. Let’s get a lot of people out there and see who the best candidate to beat Donald TrumpDonald TrumpTrump defends indicted GOP congressman House to vote Thursday on holding Bannon in contempt Youngkin calls for investigation into Loudoun County School Board amid sexual assault allegations MORE is. I don’t know who that is right now," Schumer said.