Sen. Lindsey GrahamLindsey Olin GrahamCongress punts fight over Dreamers to March Pence tours Rio Grande between US and Mexico GOP looks for Plan B after failure of immigration measures MORE (R-S.C.) said on Sunday presidential candidate Sen. Ted CruzRafael (Ted) Edward CruzOvernight Health Care: Trump eases rules on insurance outside ObamaCare | HHS office on religious rights gets 300 complaints in a month | GOP chair eyes opioid bill vote by Memorial Day HHS official put on leave amid probe into social media posts Trump, Pence to address CPAC this week MORE (Texas) has “made the best case” that he can beat real estate developer Donald TrumpDonald John TrumpAccuser says Trump should be afraid of the truth Woman behind pro-Trump Facebook page denies being influenced by Russians Shulkin says he has White House approval to root out 'subversion' at VA MORE for the Republican nomination.
“I think [Florida Sen. Marco] Rubio and [Ohio Gov. John] Kasich have got to decide among themselves: Can they be an alternative to Trump over time?” he said on NBC’s "Meet The Press."
"To me, it’s clear that Ted has made the best case thus far that he can be the alternative to Trump.
"The best thing I think could happen is for the party to unite before Ohio and Florida and make sure that we not only beat Trump in Ohio and Florida, but that we have a candidate that can beat him thereafter. And right now it seems like Ted Cruz has the best case to be made."
Graham has long criticized his Senate colleague's candidacy. He said in January that choosing between Cruz and Trump is "all like being shot or poisoned."
"I think you get the same result, whether it's quick or it takes a long time,” he said.

But he has since said that rallying around Cruz could at least stave off a win by Trump, who has won support in part by making divisive comments about Muslims and Hispanics and who last Sunday hedged when asked about support from white supremacist David Duke.