Is Cruz the only true Conservative in the Senate? Why hasn’t one senator endorsed him? Something very odd here.
Nothing odd, he's rocked the boat and attempted to tip over their gravy trains. The party establishment hates him because he intends to disrupt business as usual.
He is trying to force the government back to fiscal sanity, but nobody like a party pooper. They enjoy the perks of wielding great financial power over the government's money. They enjoy doling it out to this or that group or contributor.
There are probably some senators that agree with him, but they don't dare say so in earshot of the leadership or it's cronies.