India has a federal government with an elected Prime Minister and parliament. The parliament comprises the Lok Sabha whose members are directly elected, and the Rajya Sabha whose members are elected by state assemblies. Major national political parties in India that contest elections include the Indian National Congress, Bharatiya Janata Party, Bahujan Samaj Party, Communist Party of India, and Nationalist Congress Party. The election process is overseen by the Election Commission of India and involves delimitation of constituencies, preparation of voter lists, nomination of candidates, campaigning, voting, vote counting, and potential election petitions.