The 55-year-old, who was Hugo Chavez's handpicked successor, will be the ruling socialist party's sole candidate.
Maduro, a former union activist and bus driver assumed power in April 2013 after longtime president Hugo Chavez died in office from cancer.
With Venezuelans spending hours in line to buy scarce food and items like toothpaste and toilet paper -- Maduro's unpopularity rating has risen to 70 per cent as his oil-rich country slipped into severe economic distress compounded by corruption and the fall in the price of crude.
It has slipped to defeat in regional and municipal elections it has blamed on massive government fraud, but which have seen the Socialists tighten their grip on government.
The ruling party appears to have seized the relative momentum to bring forward a presidential vote which was to have been held by year's end.
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