With a remarkable boost in just five months since the June 7 election, the Justice and Development Party (AKP) won the Nov. 1 snap election with a landslide victory, securing a decisive majority at parliament.

The seats in the national assembly will still be occupied by four parties, but the AKP has seen a sharp rise in its share, raising the chances of it making a constitutional amendment that would pave the way for a transition to a presidential system in line with the ambitions of its founding leader, President Recep Tayyip Erdoğan.

The AKP secured around 49.4 percent of the vote, giving it 315 seats in the 550-member parliament, according to results with almost all ballots counted. For a constitutional change at parliament in favor of the presidential system in line with Erdoğan’s aspirations, the AKP needed to win 367 seats, though 330 seats would be enough to take the issue to a referendum.

The main opposition Republican People’s Party (CHP) encountered a considerable disappointment, as it only managed to slightly improve on its June 7 performance, getting around 25.8 percent.

Both the Nationalist Movement Party (MHP) and the Kurdish problem-focused Peoples’ Democratic Party (HDP) lost a considerable number of votes. The HDP, which got 13.2 percent of the votes in June, again managed to cross the 10 percent election threshold to get representation in parliament, but only by a narrow margin.

The MHP’s loss was even sharper, dropping to around 12 percent from 16 percent in June, apparently losing a sizable chunk of support to the AKP.

Eyes will now turn to the conduct of the executive body and the balance of power between Prime Minister Davutoğlu and President Erdoğan.

In the election on June 7, the AKP got 258 deputies with a 41 percent share of the vote. It needed an additional 18 deputies to secure single-party rule once again.

Commentator Mustafa Akyol tweeted as the votes were being counted, and it became clear the AKP was heading for a shock win: “People worried about instability.” He argued also that the Nationalist Movement Party (MHP), which saw its vote fall over dramatically had suffered from “dullness,” which “helped the AKP a lot.”

In June, the MHP won 16.3 percent of the vote but with three-quarters of Sunday’s vote counted its share had collapsed to 11.6 percent. It wasn’t alone in suffering: the AKP attracted back enough Kurdish voters to depress the vote of the HDP, which appeared to have seen its support drop to about 10 percent from just over 13 percent in June.

Some analysts said the HDP likely suffered from the renewed hostilities between Kurdish separatist and Turkish authorities.

Opposition parties also collected vote data, saying they would compare official ballot box results with the data sent in by party members. Before the polls, President Erdogan met regularly with muhtars, the lowest-level local administrators, prompting further opposition claims of possible manipulation plans. “This gives the impression of a possible election fraud that could involve them,” Erdal Aksünger, a CHP adviser told the Zaman newspaper Saturday.