Piron was first elected to the
municipal council of
Thouarcé in
1971 for the
Union for French Democracy (UDF). He went on to become Deputy Mayor of Thouarcé in
1977 before he was elected to the mayorship in
1983, which he held until his resignation mid-2003. In
2001, he was also elected to the
General Council of
Maine-et-Loire for the
canton of Thouarcé, a seat which he held until
2015. In the
2002 legislative election, Piron was elected to the
National Assembly in the
4th constituency of
Maine-et-Loire. Later in 2002 he joined the newly-established
Union for a Popular Movement (UMP). In the
2012 UMP leadership election, he supported
François Fillon. At the beginning of the
14th National Assembly (2012–2017) under the Fifth Republic, Piron joined the dissident
Rassemblement-UMP group in late 2012. In 2013, he joined the
UDI group in Parliament as a member of the
Union of Democrats and Independents (UDI). Prior to the
2017 presidential election, Piron supported the UDI's decision to back
Alain Juppé in the
2016 The Republicans presidential primary since the UDI decided it would not nominate a candidate of its own. Following Juppé's primary loss to Fillon and amid the
Fillon affair, Piron stated he would no longer support the primary nominee ahead of the election. After he declined to seek reelection to a fourth parliamentary term at the
2017 legislative election, he retired from national politics. In
2022, he stated he voted for
Emmanuel Macron's presidential reelection bid. ==References==