1899 by-election in Oldham, Lancashire. While campaigning in Oldham, Churchill referred to himself as "a Conservative and a Tory Democrat". Although the Oldham seats had previously been held by the Conservatives, the result was a narrow Liberal victory. Anticipating the outbreak of the Second Boer War between Britain and the Boer Republics, Churchill sailed to South Africa as a journalist for the Morning Post under the editorship of James Nicol Dunn. In October, he travelled to the conflict zone near Ladysmith, then besieged by Boer troops, before heading for Colenso. After his train was derailed by Boer artillery shelling, he was captured as a prisoner of war (POW) and interned in a Boer POW camp in Pretoria. In December, Churchill escaped from the prison and evaded his captors by stowing away aboard freight trains and hiding in a mine. He eventually made it to safety in Portuguese East Africa. His escape attracted much publicity. In January 1900, he briefly rejoined the army as a lieutenant in the South African Light Horse regiment, joining Redvers Buller's fight to relieve the Siege of Ladysmith and take Pretoria. He was among the first British troops into both places. He and his cousin, the 9th Duke of Marlborough, demanded and received the surrender of 52 Boer prison camp guards. Throughout the war, he had publicly chastised anti-Boer prejudices, calling for them to be treated with "generosity and tolerance", and after the war he urged the British to be magnanimous in victory. In July, having resigned his lieutenancy, he returned to Britain. His Morning Post despatches had been published as London to Ladysmith via Pretoria and had sold well. Churchill rented a flat in London's Mayfair, using it as his base for the next six years. He stood again as one of the Conservative candidates at Oldham in the October 1900 general election, securing a narrow victory to become a Member of Parliament at age 25. In the same month, he published Ian Hamilton's March, a book about his South African experiences, which became the focus of a lecture tour in November through Britain, America and Canada. Members of Parliament were unpaid and the tour was a financial necessity. In America, Churchill met Mark Twain, President McKinley and Vice President Theodore Roosevelt; he did not get on well with Roosevelt. Later, in spring 1901, he gave more lectures in Paris, Madrid and Gibraltar. Conservative MP: