Rubio relying on super PAC to attack Trump in do-or-die Fla.

[...] the Rubio-aligned Conservative Solutions PAC is directing attack ads at billionaire Donald Trump, pumping money into nearly every market in the state and even airing a Spanish-language ad on Rubio's home turf of Miami in hopes of encouraging a large Latino turnout.

Since Super Tuesday, Conservative Solutions has aired more than 2,300 spots in the Sunshine state and is slated to spend more than $8.7 million on radio and television ads ahead of the state's March 15 primary.

Like Bush's presidential run, which benefited from more than $75 million in radio and television advertising from Right to Rise USA, the influx of super PAC money is setting up an ad battle between the deep-pocketed— with Trump on one side and outside groups on the other.

The group is also directing its firepower at Trump— and getting help from anti-Trump groups like Our Principles, a super PAC backed by Marlene Ricketts, the wife of TD Ameritrade founder Joe Ricketts, and American Future Fund, a so-called dark money group that doesn't disclose its donors.

The combined effort has meant a flood of Trump attack ads.

Since March 1, about 2 out of every 3 Republican broadcast spots aired in Florida have attacked Trump, according to an Associated Press analysis of Kantar Media's data.