Lisbon Regicide
The assassination of King Carlos and the Prince Royal was the effective end of a constitutional monarchy in Portugal (later confirmed by the 5 October 1910 revolution). The regime functioned for another 33 months with growing agitation and demands for reform (although considerably less than in the future First Republic). It cannot be denied that the weak and permissive attitude in the Government of Acclamation was an incentive for the Republican Party to attempt another coup. The assassinations did not change the system of government; instead, they delayed the change.
United Kingdom of Portugal, Brazil and the Algarves
After issuing a new Constitution for Portugal on 29 April 1826, and as already announced in that Constitution, Emperor-King Pedro abdicated the Portuguese Crown in favour of his daughter, Princess Maria da Glória, on 2 May 1826. Princess Maria da Glória thus became Queen Maria II of Portugal. The document by which the Brazilian Emperor abdicated the Portuguese Crown was signed days before the first meeting of the Parliament established by the Brazilian Constitution of 1824, that assembled for the first time on 6 May 1826. Before his abdication, on 26 April, King Pedro confirmed the Regency of Portugal that had been established by his father during his final illness, and that was led by the Infanta Isabel Maria, his sister. As the new Queen Maria II was still a minor, Portugal would need to be led by Regents during her minority. On 30 April, King Pedro IV set the date for the first legislative elections under the new Portuguese Constitution and appointed Peers of the Realm.