Some Democrats say Crist should drop out because his political reincarnation is hurting the candidate they nominated, Rep. Kendrick Meek.
Anybody-but-Rubio Democrats say Meek should give up because Crist has a better chance of winning.
It's unlikely that either will concede to the other in an attempt to stop Rubio, but it's even less likely that either will win if it remains a three-way race.
Crist left the GOP to run as an independent. He is peeling away Democratic votes from Meek while Rubio has solid support among Republicans to give him a strong lead in polls.