Arise the Republic (DLR). DLR is a similar party to the aforementioned MPF. A former faction of the UMP, the DLR is a Gaullist Eurosceptic party. Like the MPF the DLR cooperates with the UMP in national elections and has two seats in the National Assembly.
Its support in polls is around 1-3%. Normally I’d ignore this, but pollwatch2014.eu shows them gaining a seat, presumably due to a concentration of its vote in Ile-de-France where it won 2.4% of the vote in 2009 and where it is easiest to win a seat.
DLR is a member of the Europe of Freedom and Democracy.