My Opinion:
All in all according to todays number it is impossible to trade any likely result. Maybe this is going to change until next friday, march 21th 2017.
Even a straddle might not be succesfull. Some results might be a "non event" and could cause a sideways pattern until the second round of election on May 7th 2017. Who ever can not resist to bet on any result should compare this to a regular roulette game, expecting red or black to come and same time threatened "green" to come. Who ever can not resist to bet on any result should compare this to a regular roulette game, expecting red or black to come and same time threatened "green" to come. If ever polls might not change or traders have precise knowledge about French culture and politics remind that any position is at a high risk. Shortseller can even get burned like traders who are invested in long positions. Remark: Keep in mind that 99% if all traders don´t know about this details bcs. they don´t care. If you understand, that 6 pairs are possible now and that strategic voters might cause, that the polls are deeply wrong same like that a very low number of voters on April 24 could trigger an unexpected outcome that you all belong to a small minority knowing about whats going on.
All other traders will learn about this like on the Brexit or Trump election and than it might be to late. Stockmarkets reaction can be even to the upside than to the downside.