At least not officially. The race is so close in both parties that it is impossible for any candidate to lock up the nomination on February 5 - Super Tuesday - according to a new analysis.

More than 20 states will go to the polls on the biggest day of the primary campaign, with thousands of delegates at stake. But it’s possible February 5 might not even produce clear front-runners.

Why?

• Hillary Clinton leads in delegates to the Democratic convention. Thanks separately chosen party and elected officials known as superdelegates, she has a 100-delegate lead on Barack Obama.

• There are nearly 1,700 Democratic delegates at stake February 5, enough to almost hit the magic number of 2,025. But not quite, even if Hillary Clinton or Barack Obama won them all.

One of these two rivals will be smiling a lot more after February 5, but the other won’t be eliminated … at least not mathematically.

• California (370 delegates), New York (232) and Illinois (153) all award delegates proportionally, not winner-take-all, with most awarded according to the popular vote in individual districts.

• There are more than 1,000 Republican delegates at stake February 5, enough to give a big boost toward the 1,191 needed to win — but only if one man emerges victorious in many states.

Continue reading this analysis of Super Tuesday …