Which statement expresses one advantage incumbents have in winning reelection?
◦ The House engages in reapportionment before each election in order to shore up districts for marginal incumbents.
◦ Very little casework needs to be done by incumbents, while challengers are sometimes overwhelmed by the need to do casework.
◦ The best potential challengers are often scared off by the thought of competing against a powerful incumbent.
◦ Majority and minority whips work tirelessly to ensure that citizens vote for the incumbent.