There is considerable continuity in how citizens vote

Political action committees (PACs) are an attractive option for campaign contributions because __________

a. they are allowed by law to contribute unlimited sums of money to political candidates b. most other types of contributions were banned by the Bipartisan Campaign Reform Act c. they combine many individual contributions, attracting more attention from members of Congress d. PAC contributions are tax deductible

According to the text, ______ technology has become a critical source of political leverage.

Fill in the blank(s) with the appropriate word(s).