The 1950s and 1960s witnessed an explosion in Answer: advocacy groups.

In which of the following years was the number of people lobbying Congress the highest? Answer: 2007

Which of the following types of interest groups currently spends the LEAST amount of money on lobbying expenses?

Answer: unions

Which of the following statements about the relationship between lobbyists and members of Congress is LEAST accurate?

Answer: Since lawmakers rely so heavily on lobbyists, lobbyists have found it easy to lie to get their way.

The combined result of the 2010 Citizens United and Speechnow.org decisions is that super PACs Answer: can accept unlimited contributions and make unlimited expenditures in federal elections.

Americans for Democratic Action (ADA) rates members of the House and Senate based on their voting records and how they agree with the group's agenda. This rating system is known as

Answer: "heroes and zeros."

Public interest groups are distinguished from other interest groups by Answer: advocating positions