The 3rd constituency of the Ain is a French legislative constituency in the Ain département.
|- style="background-color:#E9E9E9;text-align:center;" ! colspan="2" rowspan="2" style="text-align:left;" | Candidate ! rowspan="2" colspan="2" style="text-align:left;" | Party ! colspan="2" | 1st round ! colspan="2" | 2nd round |- style="background-color:#E9E9E9;text-align:center;" ! width="75" | Votes ! width="30" | % ! width="75" | Votes ! width="30" | % |- | style="color:inherit;background-color:" | | style="text-align:left;" | Etienne Blanc | style="text-align:left;" | Union for a Popular Movement | UMP | | 41.55% | | 55.17% |- | style="color:inherit;background-color:" | | style="text-align:left;" | Jean-Marc Fognini | style="text-align:left;" | Socialist Party | PS | | 32.68% | | 44.83% |- | style="color:inherit;background-color:" | | style="text-align:left;" | Gaëtan Noblet | style="text-align:left;" | National Front | FN | | 13.54% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Christine Franquet | style="text-align:left;" | The Greens | VEC | | 4.86% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Yves Thoumine | style="text-align:left;" | Left Front | FG | | 4.36% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Delphine Rochet | style="text-align:left;" | Miscellaneous Right | DVD | | 1.56% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Sylvie Vermeulen | style="text-align:left;" | Ecologist | ECO | | 1.02% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Eric Lahy | style="text-align:left;" | Far Left | ExG | | 0.43% | colspan="2" style="text-align:left;" | |- | colspan="8" style="background-color:#E9E9E9;"| |- style="font-weight:bold" | colspan="4" style="text-align:left;" | Total | | 100% | | 100% |- | colspan="8" style="background-color:#E9E9E9;"| |- | colspan="4" style="text-align:left;" | Registered voters | | style="color:inherit;background-color:#E9E9E9;"| | | style="color:inherit;background-color:#E9E9E9;"| |- | colspan="4" style="text-align:left;" | Blank/Void ballots | | 1.24% | | 2.49% |- | colspan="4" style="text-align:left;" | Turnout | | 53.97% | | 51.27% |- | colspan="4" style="text-align:left;" | Abstentions | | 46.03% | | 48.73% |- | colspan="8" style="background-color:#E9E9E9;"| |- style="font-weight:bold" | colspan="6" style="text-align:left;" | Result | colspan="2" style="background-color:" | UMP HOLD
|- style="background-color:#E9E9E9;text-align:center;" ! colspan="2" rowspan="2" style="text-align:left;" | Candidate ! rowspan="2" colspan="2" style="text-align:left;" | Party ! colspan="2" | 1st round ! colspan="2" | 2nd round |- style="background-color:#E9E9E9;text-align:center;" ! width="75" | Votes ! width="30" | % ! width="75" | Votes ! width="30" | % |- | style="color:inherit;background-color:" | | style="text-align:left;" | Etienne Blanc | style="text-align:left;" | Union for a Popular Movement | UMP | | 49.99% | | 60.20% |- | style="color:inherit;background-color:" | | style="text-align:left;" | Françoise Rigaud | style="text-align:left;" | Socialist Party | PS | | 19.01% | | 39.80% |- | style="color:inherit;background-color:" | | style="text-align:left;" | Fabienne Faure | style="text-align:left;" | Democratic Movement | MoDem | | 10.95% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Philippe Virard | style="text-align:left;" | Communist | PCF | | 4.99% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Olivier Wyssa | style="text-align:left;" | National Front | FN | | 4.70% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Christine Franquet | style="text-align:left;" | The Greens | VEC | | 3.46% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Luc Bailly | style="text-align:left;" | Far Left | ExG | | 2.40% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Maryse Favre | style="text-align:left;" | Ecologist | ECO | | 1.67% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Maurice Juston | style="text-align:left;" | Movement for France | MPF | | 1.17% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Emilie Albert | style="text-align:left;" | Hunting, Fishing, Nature, Traditions | CPNT | | 1.01% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Dolorès Goutailler | style="text-align:left;" | Far Left | ExG | | 0.65% | colspan="2" style="text-align:left;" | |- | style="color:inherit;background-color:" | | style="text-align:left;" | Jacques Marmorat | style="text-align:left;" | Divers | DIV | | 0.00% | colspan="2" style="text-align:left;" | |-
| colspan="8" style="background-color:#E9E9E9;"| |- style="font-weight:bold" | colspan="4" style="text-align:left;" | Total | | 100% | | 100% |- | colspan="8" style="background-color:#E9E9E9;"| |- | colspan="4" style="text-align:left;" | Registered voters | | style="color:inherit;background-color:#E9E9E9;"| | | style="color:inherit;background-color:#E9E9E9;"| |- | colspan="4" style="text-align:left;" | Blank/Void ballots | | 1.66% | | 2.87% |- | colspan="4" style="text-align:left;" | Turnout | | 55.66% | | 52.04% |- | colspan="4" style="text-align:left;" | Abstentions | | 44.34% | | 47.96% |- | colspan="8" style="background-color:#E9E9E9;"| |- style="font-weight:bold" | colspan="6" style="text-align:left;" | Result | colspan="2" style="background-color:" | UMP HOLD