After the Lancaster House negotiations, the anti-colonial movement had split into two parties, the Kenya African National Union (KANU), which was dominated by Kikuyu and Luo, and the Kenya African Democratic Union (KADU), which was led largely by members of smaller ethnic groups like the Kalenjin and Maasai. In May 1960, KANU nominated Kenyatta as its president, although the government vetoed it, insisting that he had been an instigator of the Mau Mau. KANU then declared that it would refuse to take part in any government unless Kenyatta was freed. KANU campaigned on the issue of Kenyatta's detainment in the February 1961 election, where it gained a majority of votes. KANU nevertheless refused to form a government, which was instead created through a KADU-led coalition of smaller parties. Kenyatta had kept abreast of these developments, although he had refused to back either KANU or KADU, instead insisting on unity between the two parties.