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This article analyses the logics sustaining votes for François Bayrou during the French 2007 presidential election. From data of electoral polls of the Cevipof, the sociology and the values of this electorate are described. Both indicate that votes for Bayrou were more anchored in the left than ever before. However, they are still “middle of the road” between left and right on issues such as economic interventionism. A typology has been computed. It shows the numerical importance of voters with a left wing profile who are more numerous than the “liberals from the right” and the “conservative”. Finally, regressions on the pool of potential voters of Bayrou shed light on the effect of the image of candidates but also on the effect of traditional political allegiances.