HILL
(hill)
American Congressional politics had reached the point where whenever a member of Congress voted on a controversial issue, there would be enough lobbyists, corporation, money and single issue voters to run a candidate against the member of Congress in the primaries. So even if a politician voted with the majority of his/her constituency in a controversial issue, an irate minority with money could possible defeat the member in the primary election. Even if the member won the primary, he/she would still have to raise more money to contest it and then the member might be so wounded by a bitter negative primary that he/she would be vulnerable in the general election.
A hill is a landform that extends above the surrounding terrain. It often has a distinct summit.