Of his sizable donation to the Liberal Party, Lord Ashcroft stated in his book Dirty Politics, Dirty Times:
The donation of Australian $1 million – £410,000 – was believed to have been the largest single political donation in the country’s history. I made it prior to the 2004 general election as a show of support for John Howard, the country’s Prime Minister and leader of the International Democratic Union. I have long been a great admirer of John and he was struggling against the Labour Party, which seemed poised to take power. In fact, in October 2004, John secured a fourth term and, if my donation helped him to victory at the polls, then I am delighted.