(The Mason-Dixon line forms the Maryland border with Delaware and Pennsylvania--so it runs along the western state line of Delaware.)
Gingrich would have to win almost all the remaining delegates to come to the convention in first place. He could possibly stop Romney from coming there with the magic number of delegates, but if the convention did not pick Romney my guess is they would go for someone other than Gingrich instead.
“..if the convention did not pick Romney my guess is they would go for someone other than Gingrich instead.”
Although I prefer Newt, I’m fine with anyone but Romney.