[3] Aro voted in favor of the impeachment motion of then-president Dilma Rousseff.

[4] Aro would vote against a similar corruption investigation into Rousseff's successor Michel Temer,[5] and he voted in favor of the 2017 Brazilian labor reforms.

[6] In January 2018 Aro became the president of the Humanist Party of Solidarity.

[7] After the 2018 Brazilian general election however the Humanist party failed to win enough seats to secure funding, and subsequently merged with the Podemos party.

[8] In January of the following year Aro joined the Progressive party.