Former House Speaker Newt Gingrich (R-Ga.) on Sunday offered one of the strongest hints yet that he will run for the nation's highest office in 2012. 

Gingrich said that he will begin seriously considering the possibility in about 15 months.

"Callista and I are going to think about this in February 2011. And we are going to reach out to all of our friends around the country," he said on C-SPAN's "Washington Journal" this morning.  "We'll decide, if there's a requirement as citizens that we run, I suspect we probably will. And if there's not a requirement, if other people have filled the vacuum, I suspect we won't."

Many political observers have tabbed former House Speaker Newt Gingrich (R-Ga.) as a presidential hopeful in past election cycles. Critics say that the leader of the 1994 Republican Revolution will not run because of his tumultuous personal life; he has been married three times and engaged in an extramarital affair during Bill Clinton's impeachment.