Marco Rubio is working to play a role at the Republican National Convention even as his rivals scramble to pick off convention delegates claimed by the Florida senator before he suspended his campaign.

Rubio has sent letters to Republican officials in states where he has won delegates, charging he wants to keep his delegates, even though he's no longer an active candidate.

Representatives from Rubio's network said the former candidate wants to retain his delegates in order to keep his options open in the coming months. Campaigns are preparing for the possibility of a contested national convention in July that could feature an intense fight for every available delegate.

The Rubio representatives spoke on the condition of anonymity because they weren't authorized to speak publicly about Rubio's intentions. The Florida senator suspended his campaign in mid-March, but not before accumulating 171 delegates, a trove that could help Republican front-runner Donald Trump secure the nomination — or help stop him.... Read More: ABC News