Turnout at noon (11:00 GMT) was 21%, a little bit less that simultaneously during the last parliamentary study, in 2007.
The BBC's Religious Fraser, in London, says that with the chair for economic council already under the management of the Socialists, a greater part in the reduced home gives Francois Hollande unrivaled energy to energy through his change program.
Mr Hollande's govt is due to existing a improved funds strategy to parliament next 30 days.
The outcome of the parliamentary selection will figure out the speed of change and how extreme it becomes, our reporter says.
If the remaining isn't able to win, Italy would start a interval of "cohabitation", in which the obama administration and the reduced home are managed by governmental competitors.
The right-wing Nation for a Well-known Activity (UMP) - the celebration of former Chief executive Nicolas Sarkozy - is protecting an overall greater part in the existing Nationwide Set up.
The celebration has determined an electoral contract with its centrist Radical Party and New Center companions.
With the parliamentary forms arriving hot on the pumps of April's presidential selection, there have been issues over voter turnout.
Speaking on Friday, Mr Hollande said: "I contact on the People from france to election. I contact on them to provide a huge greater part, a strong and consistent one."