The Latest: Niece of France's Le Pen quits politics for now

French far-right presidential candidate, Marine Le Pen is greeted after casting her ballot in Henin Beaumont, France, Sunday, May 7, 2017. Voters across France are choosing a new president in an unusually tense and important election that could decide Europe's future, making a stark choice between pro-business progressive Emmanuel Macron and far-right populist Marine Le Pen. (AP Photo/Francois Mori) (The Associated Press)

People takes part in a demonstration called by labour unions the day after the French presidential election, Monday, May 8, 2017, in Paris. Former civil servant and investment banker French President-elect Emmanuel Macron and his fledgling political movement La Republique En Marche (Republic On the Move), are preparing for government after defeating far-right National Front leader Marine Le Pen in Sunday's presidential runoff vote.(AP Photo/Thibault Camus) (The Associated Press)

French President-elect Emmanuel Macron, left, and outgoing President Francois Hollande, attend a ceremony to mark the end of World War II at the Arc de Triomphe in Paris, Monday, May 8, 2017. Macron defeated far-right leader Marine Le Pen handily in Sunday's presidential vote, and now must pull together a majority for his year-old political movement by mid-June legislative elections. (Stephane de Sakutin, Pool via AP) (The Associated Press)

The Latest on political fallout from France's presidential election and the country's upcoming parliamentary election: (all times local):

8:50 p.m.

The niece of defeated far-right French presidential candidate Marine Le Pen has announced she's leaving political life, at least temporarily, citing "personal and political reasons."

Marion Marechal-Le Pen had been seen as a rising star of the nationalist and anti-immigration National Front party. She is one of two lawmakers in the outgoing lower house of parliament affiliated with the party.

Marechal-Le Pen said in a letter published in a regional newspaper Tuesday that she won't run for re-election in June to represent her southeast Vaucluse district.

The 27-year-old, who is the granddaughter of National Front co-founder Jean-Marie Le Pen, is also said to be stepping down from a regional council where she leads the main opposition group.

On several occasions, Marechal-Le Pen found herself in political conflicts with her aunt and in disagreement with the policies of her party.

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9:25 a.m.

Former French Prime Minister Manuel Valls says France's Socialist party "is dead" and that he wants to run under the banner of President-elect Emmanuel Macron's political movement in June's parliamentary elections.

Valls, a center-leaning politician in favor of relaxing labor protections, had already thrown his support behind Macron before the presidential election after losing to Benoit Hamon in the Socialist primary.

Valls told RTL radio on Tuesday that Macron's victory over far-right leader Marine Le Pen in the presidential runoff on Sunday was a blow to populism in Europe, and gave a "terrific" image of France abroad.

Valls said that "I will be a candidate in the presidential majority and I wish to join up to his movement, the Republic on the Move."