Polymarket traders lift Lisnard's 2027 odds above Kalshi's

Polymarket puts David Lisnard at 12% to win the Élysée, four points above Kalshi's 8%.

In one line: Lisnard probably will not win France's 2027 presidential election. Polymarket's one-day jump to 12% overstates him, and Kalshi's 8% is nearer the truth.

David Lisnard's contract on Polymarket rose 4 points in the last 24 hours to 12%, which is its whole gain for the week. It stood at 8% on 27 Sep, fell to a 7-day low of 7% on 30 Sep and peaked at 13% on 4 Oct before easing a point.

Kalshi prices the same question at 8%, so the two venues sit 4 points apart. Inside the Polymarket event, the rise puts Lisnard a point behind Jean-Luc Mélenchon at 13%. It also puts him well ahead of François Hollande at 4% and Jordan Bardella at 1%. On Kalshi, Marine Le Pen leads the field at 50%.

The gap between the venues is the finding. The two books disagree, and the one that moved did so in a single day and has already slipped a point from its high. That pattern is consistent with a spike on one venue rather than a shift in Lisnard's prospects, though the figures given cannot tell the two apart. A 12% price ranks him beside Mélenchon as a contender, a standing that Kalshi's traders do not grant him.

The best case for the other side is that Polymarket traders moved first on a shift in the race that Kalshi's book has yet to price. Even so, Lisnard probably will not win the presidency in 2027, and Polymarket's 12% overstates his chances. Kalshi's 8% matches where Polymarket itself stood on 27 Sep, before the one-day jump, which makes it the sounder figure. The call is proved wrong if Kalshi's price rises to meet Polymarket's 12% by 31 Oct 2026, which would show the Polymarket move led a real change in the race, and finally if Lisnard wins the election that resolves the market on 19 Apr 2027.