Some people say that the Republicans are headed for a “brokered convention” or “contested convention”.
According to this page, Romney has 149 of the delegates so far. The other candidates combined have 135. That gives Romney 52.5%.
Most of the superdelegates support Romney. Assuming the Romney gets most of the superdelegates, he doesn’t need 50% in the primaries. He only needs 40-45%, and the superdelegates cover the rest.
The superdelegates enable insiders to control the nomination, if the primaries is close.
Also, Romney is leading in fundraising. There’s no advantage in lobbying/bribing the guy who finishes second.
Romney is a big favorite to win the nomination. Due to superdelegates, he doesn’t even need 50% of the primary delegates. Romney has more than 50% of the delegates so far.