Rep. Beto O'Rourke (D-Texas) raised more than $1 million online in two months for his long-shot bid against Sen. Ted Cruz Rafael (Ted) Edward CruzVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Democrat on Graham video urging people to 'use my words against me': 'Done' MORE (R-Texas), according to Politico.

O'Rourke announced in late March that he was challenging Cruz, who is up for reelection in 2018, for his Senate seat. The Texas Democrat reportedly raised $1 million online in April and May.

Second quarter fundraising numbers have yet to be posted on the Federal Election Commission’s website and the filing deadline is July 15. The second quarter includes fundraising numbers from April, May and June, so O'Rourke's numbers will likely be higher.

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O'Rourke will face a steep uphill battle in taking on Cruz next year since no Democrat has won statewide office since 1994.

He's the only Democrat who has declared a Senate run in the state, and fellow Rep. Joaquin Castro (D-Texas) has reportedly ruled out a bid.

Cruz hasn’t drawn a primary challenger, with Matthew Dowd, a former strategist for President George W. Bush, declining a Senate run in May. Buzz has also subsided over a potential bid from Rep. Michael McCaul (R-Texas), who previously floated a potential challenge.