Sarkozy will soon announce his candidacy for a second five-year mandate instead of doing it in March, as previously scheduled.
According to a report issued by Europe 1, a French radio broadcaster, the leader will make the announcement within 15 days, before 25 Feb.
"A persistent rumor has even mentioned the date of 16 February, with a large meeting in Paris or Marseille the following weekend," it said.
Elected in 2007, Sarkozy repeatedly declined to comment on his potential candidacy, saying he has to focus first on his current duties as head of state.
However, analysts say the frequent TV interviews and his recent proposals on how to boost the domestic job market are all part of an implicit campaign. Sarkozy would be attempting to appease voters after a "failed policy" that fuelled unemployment and decelerated growth.