[Anderson:] Well, shot here of Spain's El Clasico match as it's known between Barcelona and Real Madrid. The new Real Madrid manager Zinedine Zidane mastered an unlikely win in his first El Clasico in charge of the team. Unlikely? Well, let's find out why. Another El Clasico to talk about for years to come. You're watching CNN. This is Connect the World with me, Becky Anderson. And if you saw the match, you'll know what we are talking about. If you didn't, let's get more on the match out of Spain in a moment. First to what is clearly becoming a classic performance in the English Premier League. Yes, I am talking about the team known as Leicester and their unlikely title bid. The Foxes have won over Southampton, stretching their lead in the Premier League to 7 points over the second placed team Tottenham Hotspur who were held to a 1-1 draw by Liverpool on Saturday. My goodness. And what a lot to talk about. Let's talk about the Premier League, and let's talk about Spain's El Clasico match. Joined now by CNN's Don Riddell. Let's talk with the Leicester start with the Leicester Foxes. It's really starting to look like these guys are going to go all the way. Is there any stopping them at this point?
[Don Riddell, Cnn Sports Correspondent:] Well, there doesn't seem to be, does there? I mean, seven points clear with just six games to go, four more wins, Becky, will land them the title. And let's just wind the clock back 12 months, because one year ago today, Leicester were at the bottom, the very bottom of the Premier League. And here they are on the brink of what would be the most extraordinary, the most unlikely, the most historic triumphant, arguably the greatest achievement in all of football. It really is quite incredible what they have achieved. Getting to a stage of the season where their critics said, you know, but when the pressure gets to them they won't be able to hold on. Well, that doesn't seem to be the case. Five of the last six games have been won by 1-nil score lines. So, not necessarily the most attractive of wins. But they have very attractive football this season. They've really energized their supporters. They have got a lot of neutrals gunning for them as well, or supporting for them, too, and here they are so close. Spurs really did miss the opportunity yesterday to put a bit of pressure on them when they could only draw 1-1 at Liverpool. And even if Leicester's rivals, like Spurs, are able to keep winning for the rest of the season, it doesn't just look like Leicester are going to slip up. And it really is quite remarkable what they are doing. 1-0 against Southampton. Their doubters I think are running out of reasons to continue doubting that they really can on and do this.
[Anderson:] Yeah, I don't know about you, Don, but at this point I think they could be forgiven for not playing the most attractive of football. Like, you say, you could get 5,000 to 1 at the beginning of the season, couldn't you, on these guys winning the title. I mean, this even if you are not a football fan, these are the little guys. And like you say, so many people who don't support Leicester, of course, rooting for them as well. And you use the term gunning for them. And I think you were thinking about The Gunners there, the Arsenal. I don't think any of the Arsenal fans are gunning for them at the moment so far as winning is concerned, because Arsenal still hanging around of course as well. Let's talk about El Clasico. Did anybody expect Real Madrid to win that one?
[Riddell:] No, not really. And for so many reasons. Of course, Barcelona were at home. They were unbeaten in 39 games. They have been by far and away the best team in Spain this year. And when they played Real Madrid in Madrid at the end of last year this season, they thrashed Real by four goals to nil. So really nobody thought that Madrid were going to do anything in this one. But they were very persistent and patient. They won by 2-1 with a late strike just five minutes to go, Christiano Ronaldo completely unmarked at the far post and he made the most of it to give Real the win. Now, in the grand scheme of things this season certainly with regards to La Liga, it probably isn't going to make that much difference. Barca are still six clear of Atletico Madrid, seven points clear of Real and of course only handful of games remaining. But I think psychologically this result could be important. You mentioned earlier it was Zidane's first win in the Clasico as manager. I think this will give Real Madrid a huge amount of confidence for the rest of the season. And crucially for Barcelona we are now at the business end of the season. They are playing Atletico in the Champion's League on Tuesday. Their manager Luis Enrique said they looked disoriented towards the end of that game in the last 15 minutes. That is not what you would have expected from such a huge experienced and very successful team as Barcelona. And he needs to investigate what went wrong there and ensure that they don't make those kind of mistakes for the rest of the season.
[Anderson:] Great weekend of football. Don Riddell in the house with all the details for you. Don, always a pleasure. Thank you very much, sir. To the U.S. presidential election now and the race for the White House is ramping up. On the Democrat's side, two key primaries on the rise that could give Bernie Sanders an edge. And frontrunner Hillary Clinton now accusing the Sanders campaign of some brittle tactics. CNN's Chris Frates is in Wisconsin which holds its primary on Tuesday. He filed this report for you.
[Chris Frates, Cnn Investigations Correspondent:] Bernie Sanders and Hillary Clinton campaigning hard in Wisconsin in the northern city of O'Claire today. But before either candidate even hit the ground here in Wisconsin, they were throwing mud at each other. The Clinton campaign, accusing the Bernie Sanders campaign of projecting three different dates to debate in New York and April saying, this, quote, "The Sanders campaign needs to stop using the New York primary as a playground for political gains and negative attacks against Hillary Clinton. Now the spokesman for the Sanders campaign, Michael Briggs firing back hard with his statement today. Saying, quote, "Unfortunately, the dates and venues she has proposed didn't make a lot of sense. The idea that they want to debate in New York on a night of the NCAA finals with Syracuse and [inaudible] is ludicrous. We have proposed other dates, which they have rejected. We hope we can reach agreement in the near future." Now it's important to remember how this all started, after Bernie Sanders had a big weekend sweeping wins in Washington, Alaska and Hawaii, he challenged Hillary Clinton to a debate in her adopted home state of New York. For about a week, Hillary Clinton was rather non-committal then yesterday he campaign saying that they are trying to work out the dates with the Sanders campaign and then today, the Clinton campaign going after the Sanders campaigns saying that they're playing games with these dates. The Sanders campaign, of course, denying it and the reason why this New York primary is so important, many people expect that Bernie Sanders would be able to win in Wisconsin, to be able to close the gap in delegates that he has. He is lagging about 240 delegates. He needs to upset her in New York. There's a huge cash of delegates available in the empire state, about 250. That's second only to California. If Bernie Sanders can pull a win there and upset Hillary Clinton in her adopted home state, he comes very close to closing that gap against Hillary Clinton. So Sanders and Clinton hashing out when they are going to have this debate is very important. Where and when can have a big impact of that April 19th primary. We're going to continue watch that. Here in Wisconsin, Chris Frates, CNN.
[Anderson:] Well, clearly another big weekend in American politics. Republican candidates are focusing on wooing delegates in North Dakota this weekend. Now, the state only offers a small number of delegates, I've got tell you. They are crucial in tightening this race. Here is why. The state does not hold a presidential primary or caucus, meaning there is no public vote. Instead, party leaders select total of 28 delegates to attend the national convention in July. Now, the key here is that the delegates do not have to commit to any candidate before the convention. They are effectively free agents and could make a major difference if no candidate secures enough delegates needed to clinch the nomination. A brokered convention isn't totally without precedent, but it is certainly a departure from any election in the past few decades. CNN's Tom Foreman delves into what that could mean, or would mean at least, for the candidate's chances of winning the White House. Have a look at this.
[Tom Foreman, Cnn Correspondent:] There is a reason they call it a floor fight if no candidate can get that magic number of delegates necessary to clinch the nomination before the convention begins. Now, let's look at the delegate count right now. Donald Trump is the closest, but if he doesn't get that number before the convention starts or let's say you actually get to the convention and you have a floor full of people out here who have Trump signs but on the first vote he does not get enough to get the nomination squirreled away, well then we have a real problem because a floor fight is underway at that point. Why? Because after the first vote many of these delegates become unbound meaning they can vote for whomever they wish, not necessarily the person chosen by the people back in their state. So, people who are holding Trump signs may suddenly could be holding Cruz signs or maybe Kasich signs or maybe signs for somebody else altogether. Every state has its own rules. The convention will have its own rules when it starts and it won't always be clear which rules override other rules and you can bet all three of those campaigns will be doing all they can to twist arms out here, to bend the rules and to push the referees to try to get an advantage. And it could get very bitter and very nasty, but there is a reason the party does not want that to happen, overwhelming reason. Look at this from the Pew Research Center. These are the numbers. In the Republican Party if the nominee is chosen on the first ballot 64 percent of the time that nominee will go on to win the White House. Second ballot or later only 50 percent of the time. And these numbers, by the way, are even worse for the Democratic Party. There is a real cost to be paid by a party that goes into its convention undecided.
[Andreson:] And remember to join us here on CNN all day Tuesday, complete coverage of what is this critical Wisconsin primary. And as Donald Trump crisscrosses Wisconsin he helped focus his talks there around a central theme: money, specifically how trade deals don't benefit the United States or provide the jobs that Wisconsin needs. But now Trump says he alone has the business chops to eliminate trillions in U.S. debt. Head to CNN.comPolitics for more on what is Trump's ambitious claim and for what economists think about it. Your world news headlines are just ahead. Plus, an old dispute reignited. We're going to get the latest on the deadly fighting between Armenia and Azerbaijan over disputed territory.