A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d'état, establishing a military regime that lasts for seven years.

A general election is an electoral process to choose most or all members of a governing body at the same time. They are distinct from by-elections, which fill individual seats that have become vacant between general elections. General elections typically occur at regular intervals as mandated by a country's constitution or electoral laws, and may include elections for a legislature and sometimes other positions such as a directly elected president. In many jurisdictions, general elections can coincide with other electoral events such as local, regional, or supranational elections. For example, on 25 May 2014, Belgian voters simultaneously elected their national parliament, 21 members of the European Parliament, and regional parliaments.

Georgios Papadopoulos was a Greek military officer and dictator who led a coup d'etat in Greece in 1967 and became the country's Prime Minister from 1967 to 1973. He also was the President of Greece under the junta in 1973, following a referendum. However, after causing a massacre by deploying military riflemen and a tank brigade to attack non-violent protestors to suppress the Athens Polytechnic uprising, he was, in turn, overthrown by hardliner Dimitrios Ioannidis, in a string of events that would culminate in the fall of the regime in 1974. His and the dictatorship's legacy, as well as its methods he constructed and effects on Greek economy and society as a whole, are still fiercely debated.

A coup d'état, or simply a coup, is typically an illegal and overt attempt by a military organization or other government elites to unseat an incumbent leadership. A self-coup is said to take place when a leader, having come to power through legal means, tries to stay in power through illegal means.

The Greek junta or Regime of the Colonels was a right-wing military junta that ruled Greece from 1967 to 1974. On 21 April 1967, a group of colonels overthrew the caretaker government a month before scheduled elections which Georgios Papandreou's Centre Union was favoured to win.