 With Labour being the sole unionist party with broad support in Scotland, the ranks of Scots among Labour politicians have over a period of four or five decades become significant.Thus, the ranks of the so-called Scottish mafia supplied the last two Labour prime ministers, Tony Blair and Gordon Brown, as well as their predecessor as head of the Labour party, John Smith.The influential position of Scots in the Labour Party is part of the plot of the television comedy "The Thick of It", in which the character of the prime minister's director of communications (or, as he is referred to by other characters, the "enforcer"), Malcolm Tucker, is portrayed as an aggressive, foul-mouthed Scotsman.