NPR News

Republican Presidential candidate Mitt Romney has been a favorite in New Hampshire, but Rick Santorum is now getting a second look by conservative voters. Steve Inskeep and Linda Wertheimer talk to NPR's Mara Liasson and Ken Rudin about the GOP presidential race.

Corporations don't lobby Congress for fun. They lobby because it helps their bottom line. Getting a regulation gutted or a tax loophole created means extra cash for the corporation. But getting laws changed can be very expensive. How much money does a corporation get back from investing in a good lobbyist?

It's a messy, secretive system so it was always hard to study. But in 2004, economists found a bill so simple, so lucrative, that they could finally track the return on lobbying investment.

Republican presidential candidate Rick Santorum is campaigning in New Hampshire after finishing a very close second in the Iowa caucuses. His success in the Hawkeye State was a surprise because Santorum was polling in the single digits there just a few weeks back.

For Santorum, surprising the political establishment is nothing new. Since he was first elected to Congress in 1990 — at 32 years old — Santorum has made a career out of being the underdog and usually winning.