Final answer:
Logrolling is when legislators trade votes to support a package of unrelated legislation that benefits their individual interests, potentially increasing pork barrel spending.
Step-by-step explanation:
When a member "trades" his or her vote on a particular bill with another member in exchange for their votes on other legislation, it is known as logrolling.
Logrolling is the situation in which groups of legislators agree to support a package of otherwise unrelated laws that they individually favor, which can lead to an increase in pork barrel spending. An example of this would be if each member of a majority in Congress agrees to vote for a bill that includes funds for a local project in each of their districts, such as a new bridge or hospital.