The following terms are often confused: - are concerned with influencing the policies of government, - are interested in influencing who gets elected, though they do not run their own candidates. Finally, - are interested in the personnel of government, often directly running individuals for political office.

1) Interest groups - 2) political action committees - 3) political parties.

Explanation:

1) Interest groups are concerned with influencing the policies of government but do not take action.

2) Political action committees are interested in influencing who gets elected, though they do not run their own candidates. They take action but not directly participate.

3) Political parties are interested in the personnel of government, often directly running individuals for political office. They participate directly with their own candidates.