ATHENS--The political turmoil gripping Greece is already beginning to affect the local market and could have lasting damage on the country's nascent economic recovery, its central banker warned Monday.

Speaking just days before Greece's parliament is due to hold the first in a series of contentious votes to elect a new head of state, Bank of Greece Governor Yannis Stournaras said the political uncertainty was "taking on serious dimensions," and pointing to a reduction in liquidity in the market.

The votes--the first of which is scheduled for Wednesday, the last tentatively for Dec. 29--will determine whether Greece will be forced to hold snap general elections in January. The move to hold the votes sooner than originally planned has reawakened fears of political turmoil in the country at the center of the eurozone debt crisis.

Under Greece's constitution, Parliament must elect a new president every five years. But if none is picked after three rounds of votes, the chamber is dissolved and national elections called.

Those fears came into sharp focus last week as investors dumped Greek stocks and bonds amid the political uncertainty.

Many analysts fear that both the current uncertainty, and the risk of national elections in the near future, could also crimp Greece's recovery following six years of recession--a fear expressed by Mr. Stournaras as well.

"There is a risk that the growth that has only just started to resume may be halted, but there is also a large risk of irreversible damage being done to the Greek economy," he said.

The latest third-quarter data show that Greece's economy returned to growth this year, ending one of the steepest and longest contractions in postwar European history. For the full year, Greece's gross domestic product is expected to expand by 0.6% and by 2.9% next year.

But the six years of recession, made worse by years of austerity aimed at fixing the country's public finances, have left deep scars. Roughly one- quarter of the workforce is unemployed, standards of living have been rolled back a decade and tens of thousands of businesses have gone bankrupt.

Write to Stelios Bouras at stelios.bouras@wsj.com

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