Sen. Lindsey GrahamLindsey Olin GrahamGOP and Dems bitterly divided by immigration We are running out of time to protect Dreamers US trade deficit rises on record imports from China MORE (R-S.C.) said on Sunday presidential candidate Sen. Ted CruzRafael (Ted) Edward CruzDebbie Wasserman Schultz marks 10 years as breast cancer survivor Foreign agent registration is no magical shield against Russian propaganda Let Trump be Trump and he'll sail through 2020 MORE (Texas) has “made the best case” that he can beat real estate developer Donald TrumpDonald John TrumpHouse Democrat slams Donald Trump Jr. for ‘serious case of amnesia’ after testimony Skier Lindsey Vonn: I don’t want to represent Trump at Olympics Poll: 4 in 10 Republicans think senior Trump advisers had improper dealings with Russia 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.