Final answer:
The correct answer is c. politicians have no ideology. The median voter model assumes that politicians have ideologies and that they attempt to appeal to the preferences of the median voter.
Step-by-step explanation:
The correct answer is c. politicians have no ideology. The median voter model assumes that politicians have ideologies and that they attempt to appeal to the preferences of the median voter, who represents the preferences of the majority of the population. The assumption of single-dimensional voting means that the voting population can be represented on a single issue or policy dimension.
For example, if the issue is healthcare, one end of the spectrum might represent a preference for universal healthcare, while the other end represents a preference for a free-market system without government intervention. The median voter model assumes that there are two candidates competing for the votes of the electorate.
Lastly, the assumption that money impacts elections is also a part of the median voter model. It recognizes that campaign spending can influence the outcome of elections by shaping public opinion through advertisements, rallies, and other forms of campaign communication.