Regional elections (one round), 1992: FN 3,371,624
Parliamentary elections, 1st round, 1993: FN 3,152,543
Parliamentary elections, 1st round, 1997: FN 3,800,785
Regional elections (one round), 1998: FN 3,271,686
Parliamentary elections, 1st round, 2002: FN 2,862,960, splitters MNR 276,376, together 3,139,336
Regional elections, 1st round, 2004: FN 3,564,059, MNR 349,181, together 3,913,240
Parliamentary elections, 1st round, 2007: FN 1,116,136
Regional elections, 1st round, 2010: FN 2,223,760

That's far off the historical levels for 2010, even if twice the level of the 2007 outlier.

As a separate series:
Presidential elections, 1st round, 1995: Le Pen 4,571,138
Presidential elections, 1st round, 2002: Le Pen 4,804,772, Bruno Mégret 667,043, together 5,471,815
Presidential elections, 2nd round, 2002: Le Pen 5,525,034
Presidential elections, 1st round, 2007: Le Pen 3,834,530

Again as a separate series:
European elections, 1994: FN 2,050,086
European elections, 1999: FN 1,005,225, MNR 578,774, together 1,583,999
European elections, 2004: FN 1,684,947
European elections, 2009: FN 1,091,691

_{*Lunatic*, n.
One whose delusions are out of fashion.}