After the coup of 1980, all political parties were dissolved by the military government regardless of their political views, on 16 October 1981. For approximately one and half year, there were no political parties. Finally, the MGK decided to allow the formation of new parties with severe restrictions. The new parties were not allowed to use the names of former parties and senior politicians were not allowed to be charter member of the new parties. Furthermore, the MGK had the power of rejecting the charter members. Any party without a certain number of charter members was not allowed to run for the election.. This gave MGK the power to limit the number of parties that would stand in the coming parliamentary elections.
Formation
SODEP was founded by former supporters of the banned Republican People's Party, which is usually credited as the founder of Turkish republic in 1923. But there were many newly founded parties, and it would be very difficult to reach to voters without referring to the names of the former parties and politicians. So, the party's founders asked Professor Erdal İnönü to be the chairman of the party. Erdal İnönü was a world-famous physics professor but he had never been in politics. Nevertheless, he was the son of late İsmet İnönü, the second president of Turkey, and his surname was enough to create a sensation. However, İnönü was reluctant and it was difficult to persuade him. Finally, on 26 May 1983 he founded SODEP. Some of the other charter members were Türkan Akyol, Oktay Ekşi, Cahit Külebi, Cahit Talas.
Elections of 1983
21 charter members of SODEP, including İnönü, were rejected on 23 June by the MGK. The shock was great. But the party was not closed and the founders decided to continue with new charter members. The new chairman was Cezmi Kartay whose name had not been rejected. But due to ensuing vetos, the party was unable to qualify to enter the parliamentary elections which was held on 6 November 1983. In this election, most pre-coup CHP voters cast ballots for the People's Party. The HP won 30.5 percent of the vote and became the main opposition party to the victorious ANAP.
Elections of 1984
After 1983 elections, the MGK lost its former veto power, and Erdal İnönü became the chairman of the party for the second time, on 18 December. SODEP quickly qualified for the next elections, which were the local elections on 21 March. In this election, while SODEP finished second with 23.4 percent of the vote, the HP received only a modest 8.8 percent. It was clear that the choice of ex-CHP voters was SODEP - although the HP was still the main opposition party in parliament.
Merger with HP
There was a considerable public pressure on both parties to merge. Erdal İnönü and Aydın Güven Gürkan, the new leader of the HP, met and agreed on a plan to merge the parties. On 3 November 1985, SODEP merged with the HP. İnönü agreed to give up his seat during the merger. The new party formed by this merger was named the Social Democrat People's Party with the abbreviation SHP which resembled that of CHP and a party flag with 6 arrows which resembled that of CHP. The abbreviation SHP should not be confused with the same abbreviation used by the similarly-named but distinct Social Democratic People's Party after 2002.
Memoirs
The short and turbulent history of the party was documented both by Erdal İnönü and by Cezmi Kartay.
