With the French voting stations open until 7pm, and the first exit polls due just after 8pm although the French media is authorized to report preliminary results (these are not exit polls, but numbers based on processed ballots) historically an accurate indicator, here is a simple matrix predicting how the Euro will respond once the results start trickling in, together with event probabilities, according Citi:
EURUSD (%) outcomes from French Election Round 1 (joint probability of outcome in parenthesis)