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Updated 2:02 PM EDT, Mon September 21, 2015
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Tsipras claims a 'clear mandate' in Greek elections
04:05 - Source: CNN

Story highlights

NEW: "This result belongs to the working classes of this country," Tsipras says

The Independent Greeks leader says his party will ally with Syriza to form a coalition

An uncertain election outcome could complicate Greece's efforts to get more money from Europe

CNN  — 

A month after he resigned from his post as prime minister, a jubilant Alexis Tsipras declared victory in Greece’s snap elections Sunday.

Speaking to a crowd of cheering supporters in Athens, Tsipras said his Syriza party had been given a “clear mandate” at the polls.

“This result does not belong to Syriza. This result belongs to the working classes of this country, the people who fight for a better tomorrow, who dream of a better tomorrow,” Tsipras said, “and this is something that we will achieve through a lot of hard work.”

With more than 50% of votes counted, Syriza was emerging as a clear winner with 35.5% of the vote, according to preliminary elections results released by the Greek Interior Ministry. That would give Syriza 145 of the Greek Parliament’s 300 seats.

Panos Kammenos, the leader of the right-wing Independent Greeks party, told reporters that his party, which won 3.7% of the vote, would ally itself with Syriza to form a coalition. Together, they’d have enough seats to secure a majority in parliament.

Even before the final vote tally was announced, one thing was clear: The economically frail country doesn’t have time for a fresh round of political uncertainty.

‘Greece is not sustainable’

Athens needs a government to tackle its struggling economy, keep the bailout on track and try to deal with the challenge of thousands of migrants arriving on its shores.

Unless a new government gets to work quickly, Greece risks being unable to get more money from Europe. That would leave it unable to pay 3.2 billion euros ($3.8 billion) it owes to the International Monetary Fund later this year.

“Greece is not sustainable and the big issues are how far the program will go off track and how many eurozone members will join Germany in viewing missed targets as no longer a price worth paying,” said Gabriel Sterne, the head of global macro research at Oxford Economics.

The rescue agreed to in July with Europe – worth up to 86 billion euros ($97 billion) – prevented financial collapse and kept Greece in the euro.

New bailout, new elections

The leader of Greece’s opposition New Democracy party, which had argued it was better qualified to implement the measures called for by the latest bailout, conceded defeat Sunday as preliminary results of snap elections came in.

It was Syriza’s leader, Tsipras, who accepted the terms of the new bailout, disappointing many of his left-wing supporters.

Tsipras became Prime Minister after winning elections in January with pledges to get some of Greece’s huge debt burden written off and roll back unpopular austerity measures.

But he was eventually forced to back down as EU leaders refused to budge and the Greek economy sank deeper into the mire.

After having to rely on opposition lawmakers to secure parliamentary approval for the rescue package, Tsipras resigned as Prime Minister last month and called for early elections. He said he wanted the Greek people’s support to take the reform program forward.

Economy expected to shrink

Regardless of the result, the IMF says Greece desperately needs “substantial” debt relief. Without it, the country may once again find itself unable to pay its bills in the long term.

Europe has been unwilling to talk about that, saying the first review of Greece’s economic reforms takes precedence.

Meanwhile, Greece’s economy remains in a fragile state after the chaos of the summer.

Capital controls are still in place, its industrial base has shrunk, and unemployment has been hovering around 25%.

“We’ve seen a big drop in economic sentiment; we’ve seen big drops in imports and exports, so there’s likely to be a big slowdown in the economy,” Raoul Ruparel, a director of Open Europe, told CNN.

Greek GDP is expected to shrink by 2.3% this year and by 1.3% next year.

And the disruption brought about by yet another round of voting isn’t helping matters.

“Nothing is happening in the political sphere and that means nothing can happen in reforming the economy,” Ruparel said.

CNN’s Catherine E. Shoichet, Yasmin Amer, Vasco Cotovio and Isa Soares contributed to this report.