David Brock, a fundraiser and ally of the Clinton family, predicts Sen. Ted Cruz will end up being the Republican presidential nominee. So Brock is preparing attacks against the Texan for the general election.

Brock, who founded the organization Correct The Record, which works with the Clinton campaign, is confident that Cruz will end up being the Republican who challenges former Secretary of State Hillary Clinton for the presidency.

According to Politico:

He’s got a lot of money, he’s a big super PAC, he’s also got low dollar donors. He’s playing a very long game organizationally on the ground,” Brock said. “He’s going to win Iowa, I believe, maybe not New Hampshire, but then South Carolina,” Brock said, adding that the party rules that allow for winner-take-all primaries come March will ensure a Cruz victory.

While many in the Republican establishment are apparently hoping to see Sen. Marco Rubio rise in the polls, Brock claims that he doesn’t foresee Rubio becoming the GOP candidate.