(CBS News) - On this Super Tuesday morning, where 10 states have their say in the Republican presidential nomination, CBS News' "Face the Nation" host Bob Schieffer said that despite the high number of delegates at stake, a Republican nominee is not going to be decided on just yet.
On "CBS This Morning," Schieffer said that if former Massachusetts governor Mitt Romney - the current front-runner - does well and wins a lot of states and delegates, then "it clarifies things," but Schieffer said "no one's going to wrap up this nomination tonight."
More than 400 delegates are at stake Tuesday in states across the country, which is more than all twelve nominating contests so far combined, but that's not enough for a candidate to obtain the 1144 delegates needed to shore up the nomination. Romney is currently in the lead with 187 delegates.Full CBSNews.com coverage: Election 2012
Romney and former Pennsylvania Senator Rick Santorum are in a close race in Ohio, which awards 63 delegates, and former House Speaker Newt Gingrich is polling well in his home state of Georgia, which awards 77 delegates - more than any other state that votes Tuesday.
Schieffer said it's going to be tough for Romney in the general election if he goes on to win the Republican nomination but fails to win in either Georgia or Ohio, which he calls "two of the biggest battleground states" - important states to win in order to beat President Obama in November.
Schieffer said "there are going to be multiple winners tonight" because the four remaining candidates have both strengths and weaknesses in Tuesday's contests.
Rep. Ron Paul is gunning for a win in the small caucus states of North Dakota, Alaska and Idaho. Romney is expected to do well in his home state of Massachusetts and Vermont - another northeastern state to vote Tuesday. Schieffer said Santorum is doing well in Oklahoma while Santorum, Gingrich and Romney are all making a play in Tennessee.
Although Super Tuesday is planned by party leaders prior to the start of the nomination process to ensure a nominee would be determined by the end of the day, Schieffer said it's not going to happen this year.
"We don't know who the Republican nominee this morning, and I'm not sure we're going to be able to see who the nominee will be when we wake up tomorrow morning," Schieffer said. "This race is still fluid."
Watch Schieffer's full analysis in the video player above.