Beyond the classification listed above, unions' relations with political parties vary. In many countries unions are tightly bonded, or even share leadership, with a political party intended to represent the interests of the working class. Typically this is a left-wing, socialist, or social democratic party, but many exceptions exist, including some of the aforementioned Christian unions. In the United States, trade unions are almost always aligned with the Democratic Party with a few exceptions. For example, the International Brotherhood of Teamsters has supported Republican Party candidates on a number of occasions and the Professional Air Traffic Controllers Organization (PATCO) endorsed Ronald Reagan in 1980. In Britain trade union movement's relationship with the Labour Party frayed as party leadership embarked on privatization plans at odds with what unions see as the worker's interests. However, it has strengthened once more after the Labour party's election of Ed Miliband, who beat his brother David Miliband to become leader of the party after Ed secured the trade union votes. Additionally, in the past, there was a group known as the Conservative Trade Unionists, or CTU, formed of people who sympathized with right wing Tory policy but were Trade Unionists.