OE
The sentence indicates that “Even” major campaign finance reform will “fail” to do something to “the influence of money.” This money “directly relates” to a politician being able to become a politician, so the influence of money must be pretty strong. Thus, the reform proposals will fail to lessen or reduce the influence.
Graft (join or unite), pander (cater to the lowest or most base desires), importune (harass with constant demands; annoy, irritate), and indemnify (protect against loss or damage) have no relationship. On the GRE, the choices for a given blank will always be of the same form of speech; here, they are verbs. Don’t confuse the verb graft with the noun graft, which means “acquisition of money (or other valuable) in dishonest or questionable ways” and represents a theme trap here.
Answer: A,D