Francois Fillon had 68.7 per cent of the vote to 31.3 per cent for his centrist rival Alain Juppe.
Francois Fillon took a strong lead in the run-off of France's right-wing presidential primary on Sunday, early results showed.
Fillon, a conservative former prime minister, had 68.7 percent of the vote to 31.3 percent for his centrist rival Alain Juppe, results from 3,565 out of 10,229 polling stations showed.
Right-wing voters flocked to the polls for a second week running to pick the candidate expected to face far-right leader Marine Le Pen in the second round of the presidential election in May.
Between 4.2 and 4.6 million people cast ballots in Sunday's run-off, according to an Elabe estimate for BFM television.
Some 4.3 million took part in the first round on November 20, which Fillon won by 44.1 percent to Juppe's 28.5 percent.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)