A person close to Adelson said that the billionaire planned to spend at least another $5 million during the campaign — either to the Gingrich-linked group or to the winner of the Republican nomination for president — and that the initial check was intended to keep Gingrich competitive in the Jan. 21 South Carolina primary…

One person close to Adelson said that more money could go to the Super PAC depending on “how Newt does in the South Carolina primary, which is presumed to be Newt’s last stand.” Until the past week, Gingrich had been leading in polls in South Carolina, but the most recent surveys have put former Massachusetts governor Mitt Romney ahead in the Palmetto State.