题目选项分析

Campaigning for election to provincial or state office frequently requires that a candidate spend much time and energy catering to the interests of national party officials who can help the candidate to win office. The elected officials who campaign for reelection while they are in office thus often fail to serve the interests of their local constituencies.

Which one of the following is an assumption made by the argument?

【选项】Catering to the interests of national party officials sometimes conflicts with serving the interests of a provincial or state official's local constituencies