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MELISSA BLOCK, HOST:

You can believe this latest poll result if you'd like. Or not.

A survey released Tuesday that was conducted by Public Policy Polling asked people if they thought pollsters were rigging their results to show President Obama leading Mitt Romney (h/t Josh Voorhees at The Slatest).

The 37-year-old search for Teamsters boss Jimmy Hoffa will continue.

As Mark reported last week, the search for Hoffa turned to a driveway in Roseville, Mich. Police took "soil core" samples after they received a "credible" tip that someone was buried there right around the time Hoffa went missing.

A year-long study released today is providing insight into the effects of solitary confinement in New York state prisons.

The American Civil Liberties Union of New York talked to more than 100 people who spent time in "extreme isolation." In many cases, they received letters from those people.

Medicaid is already the nation's largest health insurance program in terms of number of people covered: It serves nearly 1 in 5 Americans. Yet at the same time it's putting increasing strain on the budgets of states, which pay about 40 percent of its costs.

There's always a lot of noise around a presidential campaign — minor flaps that suck up a lot of media attention but are forgotten by Election Day.

John Sides, a political scientist at George Washington University and a founder of the blog The Monkey Cage, says there's no need to worry about a lot of the ephemera that news coverage tends to focus on.

"I'm telling you, all the fun things don't matter," Sides says.

One U.S. dollar was worth 35,500 Iranian rials today, The Associated Press reports, as the collapse of the Persian nation's currency continued.

Two years ago, the rial traded at 10,000 to the dollar. It has lost about a quarter of its value in just the past week, Business Insider says.

Singer-songwriter Iris DeMent was born the youngest child of a large Pentecostal family in rural Arkansas, and later moved to Southern California. DeMent grew up listening to traditional country and gospel music, which influenced her roots-folk sound, though she was 25 when she wrote her first song. It would take another five years for her to release her first album, Infamous Angel.