Ted Cruz, the Texas senator currently in fourth in recent polls of the Republican field, gave a shrewd performance at the debate in Milwaukee on Tuesday night. He largely avoided the spotlight, instead allowing Ben Carson, John Kasich, Donald Trump, and Marco Rubio to squabble among themselves. His talking points, however, when he offered them, were carefully crafted to appeal to Evangelicals, Tea Partiers, and voters who want an outsider in the White House. In other words: much of the Republican base. As MSNBC wrote last month, “The Texas senator could very well be the sleeper, the ambush predator, and the fabled tortoise of this election.”

As the New Republic's Elspeth Reeve pointed out last month, Cruz believes that the Republican Party breaks down into four main brackets: the establishment, the Evangelicals, the Tea Partiers, and the outsiders. When the current frontrunners fade, Cruz thinks he can unite those last three groups, counting on his Christian roots (his father is a pastor) to secure the Evangelical vote, his ties to the Tea Party to become its standard bearer in the presidential race, and his record criticizing Washington to appeal to the voters who want an outsider candidate. Indeed, on Tuesday night, his talking points were carefully crafted to appeal to those three brackets.

In response to a question about immigration, Cruz said: “If Republicans join Democrats as the party of amnesty, we will lose. The politics of it would be very, very different if a bunch of lawyers or bankers were crossing the Rio Grande, or if a bunch of people with journalism degrees were coming over and driving down the wages in the press,” he continued. “Then we would see stories about the economic calamity that is befalling our nation." Those talking points are likely to resonate with the disaffected white voters currently rallying around Trump, who want an outsider in the White House.

Cruz also leveled harsh critiques at the “cronyism” in Washington. “Washington is fundamentally corrupt,” he said. “There are more words in the IRS tax code than there are in the Bible.” He has built his career on criticizing Beltway insiders, even from within Washington itself. As senator, he has attempted to shut down the government over both the budget deficit and Planned Parenthood funding. That record will help secure the allegiance of the voters who want an outsider in the White House—if and when Carson and Trump drop out. Furthermore, his Biblical reference may play well with Evangelical voters, who may begin to sour on Carson, particularly after the revelations about his life story this week.