This post has been updated.

Republican presidential hopeful Newt Gingrich will be in Richmond on Thursday morning for a fundraiser for the state GOP, Republican sources tell us.

Republican presidential candidate and former House Speaker Newt Gingrich speaks during a town hall rally in November. (By Stephen Morton/Associated Press)

Gov. Bob McDonnell will stop by the event.

“The governor knows the Speaker well, and he looks forward to stopping by this event,’’ McDonnell spokesman Tucker Martin said. “Governor McDonnell believes the Speaker is running an energetic campaign, and he’s pleased to see him bringing that campaign to his home state of Virginia on Thursday.”

McDonnell’s job approval ratings make him one of the most popular governors in the nation. Several presidential candidates have asked him for his endorsement.

He has not said when — or whether — he would endorse. But with an eye toward the vice presidential spot on his party’s ticket, it would make sense to stay out of the contest as long as possible. He supported former senator Fred Thompson in 2008.

McDonnell has spoken to Gingrich and former Massachusetts governor Mitt Romney several times and talks to Texas Gov. Rick Perry often. He has spoken to former Utah governor Jon Huntsman Jr., former Godfather’s Pizza CEO Herman Cain and former Pennsylvania senator Rick Santorum once over the years.