Exit polls suggest that President Francois Hollande's Socialists and their allies are set for a majority following the first round of voting in French legislative elections.
The Socialists appear tied with the right-wing UMP party on about 35% of the vote, but the support of Green allies gives them closer to 40%.
The outcome of the polls is expected to determine the extent and pace of reform under the newly-elected French leader.
Run-offs are to be held a week later.
The early indications are that turnout has been much lower than in the presidential elections in April, at about 60%.
France's 46 million eligible voters are picking representatives for 577 seats in the National Assembly.