Over the weekend, Democratic and Republican caucuses were held in Nevada, bringing victory to Hillary Clinton and Mitt Romney while John McCain won the South Carolina primary (the Democratic primary will be held next Saturday).

While Clinton won in Nevada, Barack Obama's close second and his possible win of one more Nevada delegate than Clinton means that a Democratic front runner is far from certain. John Edwards, though, only managed 4% of the vote and heads to South Carolina, whose primary is on January 26, needing a win to stay competitive.

Romney heard about his win in Nevada while on his way to Florida where the primary will take place on January 29. McCain's S.C. primary win has made him the real comeback story of the 2008 election - especially given his 2000 primary against George Bush, where a smear campaign falsely implied McCain's adopted child (from Mother Theresa's Bangladesh orphanage) was a love child and that his wife was a drug addict. Still, like the Democrats, it's unclear who has the edge going into Florida.

Which brings us to former mayor Rudy Giuliani, who has been focusing a lot of his attention on Florida, in hopes he can capture Florida and then New York, New Jersey and Connecticut. On This Week with George Stephanopoulos, Giuliani had to answer some tough questions about his strategy:

STEPHANOPOULOS: Mayor, you weren't even in the game yesterday -- sixth in Nevada, sixth in South Carolina. Ron Paul beat you twice. How do you spin that?

GIULIANI: We're concentrating on Florida. We've been here for two weeks. We've been campaigning here not quite full-time, but just about full-time for two weeks. We decided some time back that this is the place where we should put our most emphasis, that it worked out strength and weaknesses the best, and now we're ready for it.

We're ready for everybody to come down here, join us, start talking about who can lower taxes the most, who has the best record of a tax cutter, who's had the best record of stimulating an economy, which is so important, to people of Florida, the people of America.

STEPHANOPOULOS: But Mr. Mayor, when we spoke to you before Christmas, you said you were going to play in Iowa. You spent more than $2 million in New Hampshire, had more than 100 events there. There have now been six contests, and you've come in sixth or last five times. What do you say to Florida Republicans who are looking for a candidate who has proven they have broad-based support across the party, across the country?

GIULIANI: I say Florida can prove that. Florida is a microcosm of the country. It's a large state. It has virtually every, you know, diverse group that you can think of in different parts of the state, different economies in different parts of the state, different industries. This is a state that reflects America to a large extent, and we know this is the state that determined our president in the year 2000, so it's a state that's also very politically aware.

And the big issues here are the big issues in the country: Who can stimulate the economy, who can lower taxes. I have the biggest tax cut plan of anyone running. I have the most experience in cutting taxes of anyone running. And I've shown that it can work, that you can actually cut taxes and raise revenues, which is what really you have to do now if you want to deal with the deficit by also reducing spending.