Ted Cruz and Donald Trump are going to get Republicans “creamed” next November, Lindsey Graham warned Thursday morning in a harsh public rebuke of his party’s conservative wing.

The South Carolina senator, polling near the bottom of the GOP presidential field, arrived at the Republican Jewish Coalition forum to speak about Iran and ISIS. But after listening to his colleague Cruz give the event’s opening speech, Graham, who immediately followed, launched into a tirade ripping two of his rivals as extreme and unelectable.

“I wanted to come here and talk about foreign policy,” Graham said at one point, shaking his head. But he went off-script and decided to speak his mind, he said, because the positions taken by Cruz and Donald Trump — on issues ranging from immigration to abortion to Syria — are “setting up this party for oblivion” in next November’s election.

In a winding talk full of non-sequiturs, the typically cheerful Graham flashed visible anger when talking about Trump’s immigration rhetoric. He also panned Cruz’s assertion that Republicans will win by turning out more evangelical conservatives, instead of appealing to moderates.

“I believe Donald Trump is destroying the Republican chances to win an election that we can’t afford to lose,” Graham said. As for Cruz, he added, “I believe that it’s not about turning out evangelical Christians — it’s about repairing the damage done by incredibly hateful rhetoric.”

Speaking of general-election viability, Graham said, “Almost anybody can beat Hillary Clinton as long as they’re right on two issues” — immigration and abortion — and added, “If we don’t get those issues right we’re going to get creamed.”

On immigration, Graham blasted Cruz and Trump for promoting “garbage” ideas that have led Hispanics to conclude that Republicans “don’t like them.” Referencing Mitt Romney’s call for self-deportation in 2012, and the damage it inflicted on the GOP, Graham said, “Now it’s not self-deportation, it’s forced deportation.”

(Graham’s comments came on the heels of him telling the New York Times that Trump is “a xenophobic, race-baiting, religious bigot.”)

The other issue on which Graham spoke forcefully — and unexpectedly, given the setting — was abortion. He said if any GOP candidate’s position doesn’t “allow for an exception to rape or incest, they will lose.” He then named Cruz as such a candidate.

Graham did not mention that Marco Rubio, whose side he has taken in recent foreign-policy spats with Cruz — and who has begun to consolidate the support of establishment Republicans — has also ruled out exceptions for rape and incest.