Story highlights Sen. Lindsey Graham will host a fundraiser on Monday in support of Sen. Ted Cruz's presidential campaign

A draft of the invitation, obtained first by CNN, invites guests to "honor and support a great friend of Israel and the Jewish people"

Support for the Texas senator is an about face from the South Carolina senator, who compared nominating Donald Trump or Cruz to being shot or poisoned

(CNN) In a sign of just how much the Republican presidential primary has turned the party on its head, Sen. Lindsey Graham will headline a fundraiser on Monday in support of Ted Cruz.

Graham told CNN that while the Texas senator is not his preferred candidate, he's "the best alternative to Donald Trump," and he said he will "help Ted in every way I can."

A draft of the invitation, obtained first by CNN, invites guests to "honor and support a great friend of Israel and the Jewish people," at a meet-and-greet event that will take place during the AIPAC policy conference in Washington next week.

Graham, who ended his bid for the Republican nomination last December, originally threw his support behind former Florida Gov. Jeb Bush and campaign for him in South Carolina.