The candidates are -
Manuel Valls - Prime Minister under President Hollande from 2014 until December 6th 2016. His
website is http://manuelvalls.fr He has been a member of the Assemblée nationale, Interior Minister and Prime Minister. He ran for the Parti socialiste nomination in 2012, describing himself as "Blairiste" or "Clintonien".
Arnaud Montebourg - His website is http://www.arnaudmontebourg-2017.fr. He told the UK
Guardian that he saw himself as a French version of Bernie Sanders. Like Valls he ran for the nomination in 2012. He was Minister for Industrial Renewal from 2012-14, serving under both Ayrault and Valls
Benoît Hamon - A former Minister for Education (April - August 2014); MEP 2004-09 and a leader of the left wing at the 2008 PS Reims Congress. He resigned from the government in August 2014 in protest as Hollande's "abandonment of a socialist agenda" His website is https://www.benoithamon2017.fr
of the left wing at the 2008 PS Reims Congress. He resigned from the government in August 2014 in protest as Hollande's "abandonment of a socialist agenda" His website is https://www.benoithamon2017.fr
Vincent Peillon - Also a former Minister of Education (and former teacher 1984-92; 1993-97), he was elected as an MEP in 2014, having served in the Assemblée nationale in 1997-2002. L'Express has described him as "à équidistance de Manuel Valls, et des frondeurs" [halfway between Valls and the PS rebels on the left]. His website is http://www.vp2017.fr
was elected as an MEP in 2014, having served in the Assemblée nationale in 1997-2002. L'Express has described him as "à équidistance de Manuel Valls, et des frondeurs" [halfway between Valls and the PS rebels on the left]. His website is http://www.vp2017.fr
Sylvia Pinel - Leader of the moderate and social-liberal centre-left Parti Radical de Gauche. Minister
of Territorial Equality and Housing under the Valls premiership, leaving in February 2011. Her programme can be found at http://www.partiradicaldegauche.fr/wp-content/uploads/2017/01/Projet-SP_final.pdf
François de Rugy - A member of the Assemblée nationale since 2007, he is a former member of
EELV (Europe Ecology - The Greens) but formed his own party - Écologistes! - after breaking with EELV over their alliances with the left-wing Front de Gauche. His website is https://www.derugy2017.fr
Jean-Luc Bennahmias - An MEP for 10 years from the South of France.
He formed his own party - the Front démocrate in 2014. His website is http://jlbennahmias2017.fr
If you read French, there is a full description of each of the candidates here.
Useful sites for following the Primary are -
France 24 - English, French - Who are the candidates?
Le Monde - Primaire de la gauche
Liberation
L'Express
Le Point