Asked if was Strauss-Kahn was "the victim of a plot," 57 percent of respondents said yes, 32 percent said no and 11 percent had no opinion, according to the poll by CSA for BFM-TV, RMC radio and the 20 Minutes newspaper.
Among supporters of the Socialist Party, which Strauss-Kahn had previously been expected to lead into next year's presidential election against Nicolas Sarkozy, 70 percent believed he was the victim of a conspiracy, 23 percent did not and seven percent had no opinion.
The telephone survey was carried out on Monday among 1,007 adults across the country.
Strauss-Kahn was arrested Saturday and formally charged in New York on Monday with seven counts involving sexual assault and attempted rape of a maid in the luxury Times Square Sofitel hotel.
A judge denied him bail and he was remanded to the sprawling Rikers Island prison.