Newt Gingrich's presidential campaign has been fizzling for weeks.
Early next week, the former House Speaker is expected to put a formal end to his bid to become the Republican Party nominee.
CNN reported that two unnamed sources close to Gingrich said the former East Cobb Congressman and House Speaker would suspend his campaign in Washington on Tuesday.
According to Fox News, a campaign source said Gingrich would then endorse former Massachusetts Gov. Mitt Romney.
Romney swept to easy victories Tuesday in the Delaware, Pennsylvania, Rhode Island, Connecticut and New York primaries, adding to his delegate count in what is essentially an unopposed field.
Former Pennsylvania Sen. Rick Santorum dropped out of the race earlier this month. Gingrich soldiered on grudingly at times since he won the Georgia primary in March.
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But his impact as a candidate figures to be an uneven one even in GOP circles. As former White House spokesman and CNN analyst Ari Fleischer said: "He has not made a good case for his name after this primary is over. And that's a shame, because Newt's done a lot for the Republican Party, but graciousness is part of politics. You just have to know when your time has come to walk off the stage."
Gingrich made several stops in Smyrna-Vinings while campaigning in Georgia earlier this year, including a rally at the Atlanta Marriot Northwest and special appearance at a Cobb Chamber of Commerce breakfast. He even held his victory party in Smyrna.
But in his former Congressional District, Gingrich in 29 East Cobb precincts.