Former Vice President Dick Cheney on Thursday endorsed Marco Rubio in Florida's GOP Senate primary, saying Gov. Charlie Crist can't be trusted to stand up to President Barack Obama's agenda.
It's the latest high-profile endorsement for Rubio, who surged past Crist in the race for Sen. George LeMieux's seat.
"We can trust Marco to stand up to the Obama agenda that threatens our freedom, and promote clear conservative alternatives," Cheney said in a statement released by the Rubio campaign.
Cheney also implied Crist is guided more by polls than principles.
"Charlie Crist has shown time and again that he cannot be trusted in Washington to take on the Obama agenda because on issue after issue he actually supports that agenda," Cheney said. "Lately it seems Charlie Crist cannot be trusted even to remain a Republican."
He urged Crist, who is considering running as an independent candidate, to either stay in the Republican primary or drop out of the race, saying a three-way race would benefit Democrats. U.S. Rep. Kendrick Meek is the Democratic front-runner.
The Crist campaign declined to comment.
The GOP primary has been receiving national attention as the once-popular Crist has crashed in the polls and Rubio has risen from obscurity to become a favorite among conservatives. Over the past month, he's also picked up endorsements from former New York City Mayor Rudy Giuliani, former Massachusetts Gov. Mitt Romney and Florida House Speaker Larry Cretul.
And after Crist outraised Rubio by about a 13-1 ratio during the first quarter of fundraising, Rubio took in $3.6 million in the last quarter compared with Crist's $1.1 million.
A year ago, a Quinnipiac University poll showed Crist ahead of Rubio by 46 percentage points. Last week the same poll showed Rubio ahead by 23 percentage points.
Cheney's endorsement comes as federal authorities are investigating spending on state GOP credit cards. Twenty-seven American Express cards were issued to party leaders and elected officials. Rubio, a former House speaker, had a party card for nearly fours and admits using it for some personal expenses, but says he personally paid American Express for non-party charges.
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