BEIRUT (Reuters) - Protesters waving Lebanese flags rallied in cities and towns in their thousands on Sunday to mark a month of protests against the ruling elite as politicians struggled to form a government and solve the worst economic crisis since the 1975-90 civil war.

FILE PHOTO: Lebanon's then-Minister of Economy and Trade, Mohammad Safadi, speaks during the Reuters Middle East Investment Summit in Beirut, October 20, 2010. REUTERS/Cynthia Karam/File Photo

Lebanon’s political troubles deepened further after the withdrawal of a top candidate for prime minister narrowed the chances of creating a government needed to enact urgent reforms.

Mohammad Safadi, a former finance minister, withdrew his candidacy late on Saturday, saying it was too hard to form a “harmonious” government with broad support.

Safadi was the first candidate who had appeared to win some consensus among Lebanon’s fractious sectarian-based parties since Hariri quit as prime minister on Oct. 29, pushed out by sweeping protests against the ruling elite.

Faced by the worst financial strains since the civil war, Lebanon has pledged urgent reforms it hopes will convince donors to disburse some $11 billion pledged last year.

The unrest has kept banks shut for most of the last month. They have imposed controls on transfers abroad and U.S. dollar withdrawals, and the pegged Lebanese pound is under pressure on an informal market.

Late on Sunday large crowds of anti-government protesters poured into cities and towns across the country against an establishment widely seen as venal, sectarian and incompetent.

“We are staying here. We don’t know how long - maybe one or two months or one or two years,” said Perla Joe Maalouli, 27, a filmmaker.”Maybe it will take 10 years to get the state we are dreaming of, but everything starts with a first step.”

Protesters who have filled the streets since Oct. 17 hit out at the choice of Safadi, a businessman and longtime politician they said was part of the elite they sought to oust.

“We are in a deadlock now. I don’t know when it will move again. It is not easy,” said a senior political source. “The financial situation doesn’t tolerate any delay.”

A second political source described efforts to form a new government as “back to square one”.

Safadi became the presumed front-runner for prime minister after a meeting between Hariri, a Sunni politician, and Shi’ite groups Hezbollah and Amal, according to political sources and Lebanese media, but no political force later endorsed him.

Lebanon’s prime minister must be a Sunni Muslim, according to its sectarian power-sharing system.

Army chief General Joseph Aoun said the military would not stop people from demonstrating in squares but would intervene to open roads, calling freedom of movement “sacred”.

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Reflecting the bad-tempered political climate, President Michel Aoun’s Free Patriotic Movement (FPM) accused Hariri of failing to rally support for Safadi’s bid in order to undermine his candidacy and keep the job for himself.

An FPM statement criticized Hariri for insisting on a policy of “me or no one” to lead the next government, a reference to Hariri’s insistence on returning as premier only if he can be the sole politician in a cabinet of specialists.

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A statement by Hariri’s office rejected FPM’s assertion that he undermined Safadi’s candidacy as an irresponsible attempt to “score points” despite Lebanon’s “major national crisis”.

But in a statement Safadi later blamed Hariri for not keeping “promises on the basis of which I accepted to be named prime minister of the next government”.

He did not say what the promises were, but added: “There was nothing left for me to do but announce my withdrawal.”

Safadi’s withdrawal leaves the powerful, Iran-backed Hezbollah and its allies with even fewer options unless they push for a close Sunni ally, a scenario that would likely reduce the chances of Lebanon winning international support. Hezbollah is classified as a terrorist group by the United States.

Hezbollah and Amal, along with Aoun, a Maronite Christian, have sought for Hariri to return as premier while including both technocrats and politicians in a new cabinet.

But Hariri, aligned with Gulf Arabs and the West, has said he will return as prime minister only if he can form a cabinet composed of specialists who can attract international support.

Global ratings agency S&P flashed a warning on Lebanon, lowering its foreign and local currency sovereign credit ratings deeper into junk territory to ‘CCC/C’ from ‘B-/B’.

Lebanon’s banking association said it had agreed a set of temporary directives for commercial banks that include a $1,000 cap on weekly withdrawals from U.S. dollar accounts. The steps were intended to standardize the work of banks amid the country’s “exceptional circumstances,” it said.

Bank staff plan to continue a nationwide strike on Monday over safety fears as depositors demand access to their money.