Gingrich financial supporter says he's "at the end of his line"

(CBS News) As Republican presidential candidate Newt Gingrich downsized his campaign operation amid money woes, his largest financial supporter, Sheldon Adelson, said the former House speaker is nearing the end of the road to his presidential ambitions.

Despite praising Gingrich, Adelson, the Las Vegas casino mogul, said Gingrich is "at the end of his line," partly because he is unable to obtain the 1144 delegates necessary to secure the nomination.

"'Cause, I mean, mathematically he can't get anywhere near the numbers and it's not - is unlikely to be a brokered convention," Adelson said in a video posted on

Adelson and his wife, Miriam, gave $16.5 million to a pro-Gingrich super PAC, Winning Our Future. The total equates to 87 percent of the $18.8 million the super PAC has raised, enabling Gingrich to say in the race despite winning only two states, including his home state of Georgia.

Adelson's comments come asthe Gingrich campaign announced Tuesday that it was scaling back its schedule and cutting campaign staff by one-third.

Gingrich maintained that the modified plan will enable him to stay in for the long haul in the hopes of a brokered convention.

"I think you have to respond to reality and we have cash flow shorter than we'd like it to be, so we're doing the appropriate things to be able to campaign," Gingrich said Wednesday morningin a radio interview with WTOP radio in Washington.

Although he appeared resigned to the fact that Gingrich will not be the next president, let alone the Republican nominee, Adelson had few positive words about his rivals Rick Santorum and Mitt Romney.

As for Romney, Adelson said he is "not a bold decision maker." He likened Romney to President Obama.

"Every time I talk to him, he says, 'Let me think about it,'" Adelson said. "He's like Obama."

On the former Pennsylvania senator, who has spent much of his career in Congress, Adelson said, "This man has no history whatsoever of creating anything or taking risks."

"I like him... but I gotta tell you something, I don't want him running my country," Adelson said.