2% max recommended unless otherwise noted. 1% max recommended for soccer.
Le Pen to get 45% or better on Sunday at +210
https://www.oddschecker.com/politics/european-politics/french-politics/2nd-round-vote-percentage-le-pen
Le Pen to lose by between 5 and 10 points: 32%
https://www.predictit.org/markets/detail/7850/What-will-be-the-margin-in-the-French-presidential-election-second-round