Marco Rubio’s campaign is preparing for a contested Republican Convention as one option to take the GOP nomination away from Donald Trump and Ted Cruz, his campaign manager told top donors at a closed-door meeting in Manhattan Wednesday night.

As Rubio scrambles for support ahead of Super Tuesday, Terry Sullivan, Rubio’s top adviser, used a Power Point presentation and took questions from attendees to lay out the two courses that Rubio’s quest for the GOP nomination could take in the coming months, two people present told CNN, speaking anonymously to share details from a private meeting.

The first showed the number of states and delegates Rubio would need to clinch the nomination outright before July’s convention. The second was the scenario in which none of the candidates gain the simple majority delegates needed to clinch the nomination before the convention, unleashing a messy and potentially unpredictable battle where multiple candidates are vying for the title.