He invites would-be supporters "to the greatest grassroots campaign this country has ever seen".
His entrance into the race is the culmination of his two-year, out-of-nowhere rise from a back-bench congressman largely unknown outside El Paso to Democratic stardom as a record-breaking fundraiser, the subject of an HBO documentary and the target of two separate efforts to draft him into the presidential campaign. Beyonce, a Houston native, endorsed O'Rourke.
Beto O'Rourke was born to run. for president.
O'Rourke skyrocketed to national attention and emerged as a Democratic favorite in 2018 as his quixotic bid to unseat Sen.
Democrats have long dreamed that a booming Hispanic population could eventually flip Texas blue and transform the electoral college, making the Republican path to the presidency all but impossible.
O'Rourke's advisers have reached out to early-state Democratic officials seeking advice for potential hires and strategy.
His comments were carried live on several cable television networks, something other Democrats in the already crowded White House field haven't had.
"I think that competition is good in our party", the senator from Minnesota said, telling Harlow that former President Barack Obama has been telling 2020 candidates that he believes the more the merrier in the nomination fight.
O'Rourke visited all 254 of Texas' counties while running for Senate and often drew larger-than-expected crowds, including in conservative areas that Democrats gave up on decades ago.
Klobuchar, asked about O'Rourke on Thursday, let out a hearty, "Welcome!"
President Trump responded to the news Thursday that Beto O'Rourke's is running for president by talking about the Texan's hands.
Trademark, black-and-white "Beto for Senate" yard signs became staples in places like NY and Los Angeles - with some supporters now converting them to read "Beto for President 2020". He didn't hire traditional political consultants and pollsters, didn't take any PAC money and refused to go negative against Cruz. But a presidential bid will be a much different test for O'Rourke, who will face serious pressure from the left for the first time in his political career. He's also planning a campaign rally in El Paso on March 30. But that's not the case with Beto O'Rourke, the former Texas congressman who threw his hat in the ring late Wednesday. O'Rourke accused Trump of stoking "false fear" about immigrants.