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Saturday is South Carolina's Republican presidential primary. It's also the second anniversary of the Supreme Court's famous Citizens United decision.

That's the case that allows corporations to explicitly support or attack specific candidates. The day will be marked with attack ads — and protests.

The Republican presidential race has covered just three states so far. And superPACs linked to candidates Mitt Romney, Newt Gingrich, Rick Santorum and Ron Paul have spent a total of $20 million. They're feeding voters a heavy diet of negativity.

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RENEE MONTAGNE, HOST:

This is MORNING EDITION from NPR News. I'm Renee Montagne.

DAVID GREENE, HOST:

And I'm David Greene.

You may have thought Iowa was done counting its votes a few weeks ago. Well, then came the news this week that based on further review, Rick Santorum actually won more certified votes than the declared winner, Mitt Romney. The problem is the tallies from some precincts remain lost. And yesterday, Iowa's GOP chairman called the overall results inconclusive.

The last Republican presidential debate before Saturday's South Carolina primary was expected to be lively. It didn't disappoint.

It was clear, even before the four remaining candidates met on the stage in Charleston, SC, that at least three of them would face some fairly high-stakes moments that could change the course of the contest. The question going into the debate was would they be able to master those moments?

When a pro-democracy movement took to the streets of Morocco last February, King Mohammed VI, who's been on the throne for more than decade, responded swiftly.

Within weeks, the king proposed a new constitution and snap elections. The Moroccan example of reforms without violence was hailed by some as a model.

Millions of homeowners are finding out that their property taxes are either holding steady or climbing, even as their house may be worth much less. There may not be much they can do about it.

In Ohio, Cuyahoga County's fiscal officer, Wade Steen, has been taking many calls from unhappy homeowners. He says they most often live in a community where voters passed a recent levy. That's a property tax measure that boosts funding for things such as schools and libraries.

If you listen to commercial radio, this is not news: Katy Perry had a huge year. She went No.1 five times. She was the most played artist on the radio. But the record industry is so weird, it's hard to know whether this kind of success translates into huge amounts of money.

So we asked.

I walked over to Katy Perry's record label. She's on Capital, which is under EMI. I met Greg Thompson, executive vice president of marketing and promotion at EMI.

"Did you guys end up in the black?" I asked.

The U.S. Food and Drug Administration has a gathered a group of scientists and other experts to study flavored melt-in-your-mouth tobacco products.

The panel, meeting this week, will hear from two camps of stop-smoking advocates: those who worry that dissolvables are a gateway to smoking and others who say they help people kick the habit.

Gregory Conley, a 24-year-old law student at Rutgers University, pops a dissolvable during class or while he's studying.

Whenever the late New York Times caricaturist Al Hirschfeld sketched Carol Channing — whether picturing her as an indomitable Dolly Levi, swathed in feathers and sequins, or as carbon-crazed Lorelei Lee, eyes sparkling like the diamonds that were that splendid creature's best friends — he always made her appear a creature composed entirely of lipstick, mascara and hairspray.