From NPR News in Washington, I'm Louise Schiavone.

Three days away from the delegate-rich GOP Wisconsin presidential primary vote, Mitt Romney is working to establish himself as the inevitable Republican standard-bearer and the man to deny President Obama a second term.

They just kill economic freedom, they make it harder and harder for our economy to grow and put people back to work. And the proof in the polling, look at this recovery. The most tepid and weakest recovery we've seen since Hoover.

Also campaigning in Wisconsin, Pennsylvania's Rick Santorum continuing to argue that he, not the former Massachusetts governor, is the man to get the job done.

We are able to win, not with moderate candidates, but with conservative candidates for the people who knew when they went to Washington DC, you can trust them to do what they say, no Etch A Sketch, not written on a Etch A Sketch, but written on your heart.

In addition to Wisconsin, there will be primaries Tuesday in Maryland and in the district of Columbia.

President Obama used his weekly address to call for higher taxes on millionaires . NPR's Neda Ulaby has details.

The president said the point is to make the country a little more fair.

Should we as middle class Americans to pay even more at a time when their budgets are already stretched to the breaking point, or should we asked some of the wealthiest Americans to pay their fair share.

The president named Warren Buffett, Bill Gates and himself as examples of people who he says are not paying their fair share when it comes to taxes. The Buffett Rule got it name from the billionaire who famously observed his tax rate is lower than his secretaries. The president's budget proposal would require people who make a million dollars a year or more to pay a tax rate equal or higher to those paid by middle class families. Neda Ulaby, NPR News.

Lottery winners in Kansas, Illinois and Maryland will split a 640-million-dollar jackpot. As NPR's Joe Rose reports lottery officials say that total was the highest ever.Wannabe Millionaires across the country held their breath last night, when the winning members were picked, the rates of winning 176 million to one.

A first number tonight is 46, that's followed by 23, up next we have 38, that's followed by ..

When the dice settled winners in Kansas, Illinois and Maryland, where each holding a ticket expected to be worth more than 213 million dollars before taxes. The other winners are the 42 states and the district of Columbia that sponsored the lottery. The greater, the normal interest in the Mega Millions jackpot should translate into tens of millions of dollars in extra revenues for the house. Joe Rose, NPR News.

Around the world today, major cites are participating in Earth Hour, starting it off, Sydney, Australia where the Harbor Bridge and Opera House went dark for an hour, part of a global environmental campaign to focus on climate change by briefly turning off the lights.

This is NPR News in Washington.

French police have swept that nation's for suspected radical Islamists, apprehending 19 people later freeing two. The sweep followed a spate of deadly attacks in Southwest France by a gunman claiming links to al-Qaeda. He was killed by a police after a standoff. A French intelligence officials is telling a newspaper in Marseille that the suspects had sophisticated weapons conducted training and may have been preparing a kidnapping.

I'm Louise Schiavone, NPR News, Washington.