PARIS — French President Francois Hollande’s dramatic decision not to seek a second term next year leaves the leftwing field open in an election that is proving increasingly unpredictable.

Hollande announced yesterday he would not seek re-election next April, bowing to historic low approval ratings.

"I have decided that I will not be a candidate," the 62-year old Hollande said in a solemn televised address from the Elysee Palace in Paris.

Manuel Valls, who had been a loyal prime minister to Hollande until recently but hinted at the weekend he might run against his boss in planned primaries, is expected to throw his hat in the ring.

The president conceded he had failed to rally his deeply divided Socialist Party behind his candidacy and keep a promise to slash unemployment, which hovers at around one in 10 of the workforce.

"In the months to come, my only duty will be to continue to lead my country," he said.

The Socialist leader has some of the lowest approval ratings for a French president since World War II.

His term has been marked by U-turns on major policies, terror attacks, a sickly economy and embarrassing revelations about his private life.

A new poll on Wednesday predicted he would win just seven percent of votes in the first round of next year’s election -- strengthening Socialist Party critics who view him as a lame duck.

Voter surveys currently tip rightwing Republicans party candidate Francois Fillon to win the election, with the far-right National Front (FN) candidate Marine Le Pen seen as the closest challenger.

But the full range of candidates remains unknown and the role of independents such as 38-year-old ex-economy minister Emmanuel Macron are difficult to predict.

The emergence of Fillon threw up a surprise in itself. At the start of the rightwing primary, he was considered a distant third, only to roar through the field and win comfortably.

Hollande’s decision flings open the door to others vying to be the Socialists’ champion.

The party began accepting candidates on Thursday for its primaries, due on January 22 and 29. The presidential elections are due on April 23, with a runoff on May 7.

Arnaud Montebourg, a leftist former economy minister, has already submitted his name. — AFP