After World War II Umbria became a stronghold of the Italian Communist Party.
For these reasons, Umbria was long considered part of the so-called "Red belt".
[4][5] The Legislative Assembly of Umbria (Assemblea Legislativa dell'Umbria) is composed of 21 members.
The assembly is elected for a five-year term, but, if the President suffers a vote of no confidence, resigns or dies, under the simul stabunt, simul cadent (literally they will stand together or they will fall together) clause introduced in the Italian Constitution in 1999 and later incorporate in the Statute of Umbria, also the assembly is dissolved and an early election is called.
In the latest regional election, which took place on 17–18 November 2024, Stefania Proietti (an independent supported by the Democratic Party) was elected President of Umbria by defeating incumbent President Donatella Tesei (Lega Umbria).