I have a suspicion that the National Front, if they reach the run-off election for the 2017 French presidential election, may have a better chance if they face a left wing opponent rather than a centre-right opponent. What does polling currently indicate the influence National Front's opponent has on how many people would vote for the National Front, vote for the National Front's opponent, or abstain from voting?
No, not really, or not that much anyway.
But on the other hand, if the left and right in France screw up and not "connect" with regular folks, then all bets are off.
If the FN gets into the 2nd round of the presidential elections, then all the left and right will join against them like they did in 2002.