10. LIBERAL DEMOCRATIC PARTY, JAPAN

The Liberal Democratic Party of Japan was established in 1955 as a merger between two of Japan's political parties, the Liberal Party and the Japan Democratic Party. The LDP is usually considered politically inclined based on conservatism and Japanese nationalism. The LDP traditionally identified itself with a number of general goals: rapid, export-based economic growth and close cooperation with the United States in foreign policies.

9. AFRICAN NATIONAL CONGRESS, SOUTH AFRICA

African National Congress is the Republic of South Africa's governing political party. The ANC originally attempted to use non-violent protests to end apartheid. It has been the ruling party of post-apartheid South Africa since the election of Nelson Mandela in the 1994 election. The ANC deems itself a force of national liberation in the post-apartheid era. In 2004, the ANC declared itself to be a social democratic party.

8. REPUBLICAN PARTY, UNITED STATES

The Republican Party is one of the two major political parties in the United States. The Republican Party was established in 1854. The Republican Party supported classical liberalism, opposed the expansion of slavery and supported economic reform. Abraham Lincoln was the first Republican president. There have been 19 Republican presidents, the most from any one political party. The 21st-century Republican Party ideology is American conservatism, which incorporates both economic policies and social values.

7. BHARATIYA JANATA PARTY, INDIA

The Bharatiya Janata Party is the current ruling political party of the Republic of India. It is the country's largest political party in terms of representation in the national parliament and state assemblies and is the world's largest party in terms of primary membership. The Bharatiya Janata Party was officially founded in 1980 and the first general election it contested was in 1984. The official ideology of the BJP is integral humanism, first formulated by Deendayal Upadhyaya in 1965.

6. UNITED RUSSIA, RUSSIA

United Russia is the ruling political party of Russia. The United Russia party formed in December 2001 through a merger of the Unity and it is the largest party in Russia. United Russia is also classified by political scientists as a "catch-all party" or as a "party of power". In 2009, it proclaimed Russian conservatism as its official ideology. The United Russia party, along with A Just Russia party, supports the policy of Russian president Vladimir Putin, who is also de facto leader of the party.

5. INDIAN NATIONAL CONGRESS, INDIA

The Indian National Congress is a political party in India. It was established in 1885 and was the first modern nationalist movement to emerge in the British Empire in Asia and Africa. The party led India to independence from Great Britain and became the principal leader of the Indian independence movement. The party's constitution adheres to liberal–democratic socialist philosophy. On social and economic issues, it advocates liberty, social justice, equality, welfare state, along with progressive and secular society.

4. CHRISTIAN DEMOCRATIC UNION OF GERMANY, GERMANY

The Christian Democratic Union of Germany is a Christian-democratic and liberal-conservative political party in Germany. It was established in 1945 as an interdenominational Christian party. It is the major catch- all party of the centre-right in German politics and claims to represent "Christian-social, liberal and conservative" elements. the CDU is a member of the Centrist Democrat International, the International Democrat Union and the European People's Party.

3. CONSERVATIVE PARTY, UK

The Conservative Party is a centre-right political party in the United Kingdom. It was established in 1834 from the Tory Party and was one of two dominant political parties in the 19th century, along with the Liberal Party. Members of the public join the party by becoming part of a local constituency Conservative Association. The Conservative Party believes that free markets and individual achievement are the primary factors behind economic prosperity.

2. COMMUNIST PARTY OF CHINA, CHINA

The Communist Party of China is the founding and ruling political party of the People's Republic of China and the second largest political party in the world. It was founded in 1921, chiefly by Chen Duxiu and Li Dazhao. The CPC is committed to communism and continues to participate in the International Meeting of Communist and Worker's Parties each year. It also controls the world's largest armed forces, the People's Liberation Army.

1. DEMOCRATIC PARTY, UNITED STATES

The Democratic Party is one of the two major political parties in the United States. The Democratic Party's philosophy of modern liberalism advocates social and economic equality, along with the welfare state. Fifteen Democrats have served as President of the United States and the most recent was Barack Obama, who was the 44th and held office from 2009 to 2017. The modern-day Democratic Party was established in 1828 by supporters of Andrew Jackson and making it the world's oldest active political party.