Former House speaker Newt Gingrich had some tough words for forward-looking Republicans hoping for demographic gains and for Karl Rove's plan to use super PACs to boost the GOP's efforts.

In an interview Wednesday on "CBS This Morning," Gingrich warned that Republicans' failure to appeal to a "younger, more Latino, more African-American" population could make them "non-competitive at the presidential level." 

"I think a lot of our consultants are, frankly, just kidding themselves about how big the gap is," Gingrich said of Republicans' understanding of the demographic and electoral landscape.

Gingrich then called Karl Rove's plan to  promote less-radically conservative Senate candidates by using super PACs a "terrible idea."

"We don't want to become a party in which a handful of political bosses gather up money from billionaires in order to destroy the candidates which they don't like," Gingrich said.

"I think this a very dangerous model," he said. "The fact is we lost nine U.S. Senate races we could have won. There is some very deep rethinking we need to do as a party, but it isn't gathering up money by Washington consultants to handpick the people they think should be in the U.S. Senate."

The warning against the influence of billionaires is ironic coming from Gingrich, a former presidential candidate whose campaign was helped by more than $20 million in super PAC contributions from casino mogul Sheldon Adelson and his family during the 2012 Republican primaries..