Newt Gingrich's presidential campaign may be close to admitting what the American public has known for months: The former speaker of the House will not win the 2012 Republican nomination.

On Tuesday Gingrich's daughter, Jackie Gingrich Cushman, said her father will reassess his campaign after the Delaware primary, language that seems to indicate he could be setting the stage for his exit from the Republican presidential race.

He talked about waiting for results and looking to see what happens and then potentially reassess, she told MSNBC. Her father has not won a presidential primary since finishing first in his home state of Georgia on March 6.

Gingrich himself has not demonstrated clear signs of wavering, warning as recently as Monday that although Mitt Romney is clearly the front-runner it doesn't mean he's inevitable.

Still, while campaigning in the Wilmington area of Delaware on Monday -- which is holding its GOP primary on Tuesday along with Connecticut, New York, Pennsylvania and Rhode Island -- Gingrich said he would have to stop and take a deep breath if Romney takes the state, the Associated Press reported.

There is no reliable polling to indicate where the remaining Republican candidates, including Rep. Ron Paul of Texas, stand in Delaware. The Gingrich campaign has reportedly focused its efforts on the small state in the past few weeks in attempt to bounce back in a way that could prompt donors to take another look at what is widely considered to be a flagging campaign.

Gingrich's campaign is currently more than $4 million in debt, according to figures released last week. The campaign's March financial report showed it spent a little over $2 million that month, while raising only $1.6 million.

Aside from Georgia, Gingrich came out on top only in January's South Carolina primary. He has won 137 delegates of the 1,144 needed to become the Republican nominee. In comparison, Romney has won 698 and Ron Paul has taken 75.