Nasty Party

The term Nasty Party was first used publicly by Theresa May where in October 2002 she described the Conservative Party of the United Kingdom as "There's a lot we need to do in this party of ours. Our base is too narrow and so, occasionally, are our sympathies. You know what some people call us -- the Nasty Party." The phrase applies to the Conservative Party because of their hostility to disabled people and other vulnerable people.
The term "Nasty Party" applied to Conservative Party members with traditional conservative stances which included being anti-gay, anti-minorities, and pro-business, and lacking concern for the poor.
Many conservatives felt this one the reasons the Conservative Party lost the last three general elections and needed to broaden their traditional base to have a chance of reelection.