Single-party state

A single-party state is a country that only one party can have legal power in the government.

Current single-party states

 * People's Republic of China - The constitution designates the Communist Party of China as the ruling party.
 * Eritrea - the People's Front for Democracy and Justice is the only legal party, and got a totalitarian rule
 * Laos - the Lao People's Revolutionary Party (Communist party) is the only legal party
 * Turkmenistan - the Democratic Party of Turkmenistan is the only legal party, and have etablished a totalitarian rule
 * Vietnam - the Communist Party of Vietnam is the only legal party.

States with restrictions on political parties
Some states have laws against some types of ideologies that parties are not allowed to follow. Though it exists more of these, these are a few of them:
 * Afghanistan - the American puppet regime have banned to form political parties breaking the Sharia laws in that country.
 * Iran - all candidates must be approved by a Shiite cabal.
 * Israel - only parties that recognize the right of Israel to exist are allowed to participate in elections, or negotiations.
 * South Korea - parties supporting the North Korean government are banned.
 * United States of America - the national, or state-wide, character of most elections strongly handicap candidates from any minority party. Only candidates of the Democratic Party and the Republican Party have a reasonable chance of winning the majority of the votes in an election resulting in a de facto two-party state.