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KNOW IT ALL: Tuesday's Top Stories at NBC News

Rumors are swirling about who might lead Disney next, and other stories we're following today.

Good morning. Here are some of the stories we're following today:

1. Trump's National Lead Dips After Controversial Week

Donald Trump remains the national front-runner ahead of the Wisconsin primary, but his support among Republicans and Republican-leaners has dropped three points to 45 percent, down from 48 percent last week. Ted Cruz is behind him with 28 percent and John Kasich has 18 percent, according to the NBC News|SurveyMonkey Weekly Election Tracking poll. Read more in POLITICS.

2. Clinton Leads Nationally, But Sanders Could Score in Wisconsin

Hillary Clinton holds a 9-point lead over Bernie Sanders, with 51 percent support heading into the important Wisconsin primary Tuesday. However, the open primary format in Wisconsin may give Sanders an advantage over Clinton as he continues to do extremely well with independents who lean toward the Democratic Party. Read more in POLITICS.

3. Panama Papers Link Notorious Events in History

The web of hidden money and offshore shell companies documented in the Panama Papers reveals an alternate financial universe that links a single law firm with a globe-spanning rogue's gallery of politicians, moguls, criminals and shady agents. While much attention has focused on links to Russian President Vladimir Putin, whose name doesn't appear in the documents, the leaked files — reported by The International Consortium of Investigative Journalists — also expose new details about far-flung capers dating back decades. Read more in NEWS.

4. Villanova Beats UNC to Win NCAA Championship

No. 2 Villanova and No. 1 North Carolina produced a national title game we won’t soon forget. The Wildcats won 77-74 on a Kris Jenkins three as time expired, but his heroics came 4.7 seconds after North Carolina’s Marcus Paige hit a double-clutch three to tie the game. Read more in SPORTS.

5. Americans Killed in Brussels Return to U.S. Soil

The bodies of an American couple killed in the Brussels attacks have arrived back in Kentucky for burial. Justin and Stephanie Shults — who moved to the Belgian capital in 2014 — were seeing off Stephanie's mother at the city's airport when two bombs detonated on March 22. Their remains arrived at Kentucky's Blue Grass Airport on Sunday, where they were given a police escort to a local funeral home, the family told NBC station WLEX on Monday. Read more in NEWS.

6. Alabama Gov. Robert Bentley Asks God to Forgive Him

Embattled Alabama Gov. Robert Bentley played the God card Monday as he apologized again for the seamy scandal that has upended his administration. "I've asked God to forgive me because that's the most important thing," Bentley said while on a tour of a correction facility. Bentley devoted less than three minutes of his remarks to the abrupt exit of his senior political adviser Rebekah Caldwell Mason last week amid allegations of an affair between the two. Read more in NEWS.

7. Could Sheryl Sandberg Be the Next Disney CEO?

The shocking and sudden departure of Thomas Staggs as Walt Disney Company's chief operating officer Monday has blown open the race to succeed Bob Iger atop the entertainment giant. Speculation swirled that Facebook COO Sheryl Sandberg might be an attractive successor. At 46, she would be a young enough to guide the company for decades, and has the Silicon Valley bona fides to help Disney adapt to the digital era. Read more in BUSINESS.

Nightly Spotlight: White Sox Announcer With Cerebral Palsy Is Making MLB History

With legendary TV play-by-play announcer Hawk Harrelson dialing back his schedule, Jason Benetti is giving fans a new voice to root for in the broadcast booth.

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