2018 Haute-Garonne's 8th constituency by-election
11 March 2018 (first round)
18 March 2018 (second round) | |||||||||||||||||||||||||||||||||||||||||
| Turnout | 34.41% 18.35% (first round) 33.08% 14.13% (second round) | ||||||||||||||||||||||||||||||||||||||||
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A by-election was held in Haute-Garonne's 8th constituency on 11 March 2018, with a second round on 18 March as no candidate secured a majority of votes in the first round. The by-election was prompted after the Constitutional Council invalidated the election of Joël Aviragnet, candidate of the Socialist Party (PS), in the June 2017 legislative elections on 18 December 2017.
Aviragnet was re-elected by a massive margin in the second round rematch against Montsarrat, securing over 70% of valid votes and winning by a margin 40 points larger than in June 2017.