Ted Cruz is very unpopular today.

With Senate Republicans.

Ted Cruz faced a barrage of hostile questions Wednesday from angry GOP senators, who lashed the Texas tea party freshman for helping prompt a government shutdown crisis without a strategy to end it.

At a closed-door lunch meeting in the Senate’s Mansfield Room, Republican after Republican pressed Cruz to explain how he would propose to end the bitter budget impasse with Democrats, according to senators who attended the meeting. A defensive Cruz had no clear plan to force an end to the shutdown — or explain how he would defund Obamacare, as he has demanded all along, sources said.

Things got particularly heated when Cruz was asked point-blank if he would renounce attacks waged on GOP senators by the Senate Conservatives Fund, an outside group that has aligned itself closely with the Texas senator.

Cruz’s response: “I will not,” according to an attendee.