Probably no real impact. I'm not an expert and my knowledge on this comes entirely from a free guided tour of Lisbon I went on today, but the democracy was already a complete disaster. The second paragraph on this wikipedia article[0] says it all:

> The sixteen years of the First Republic saw nine presidents and 44 ministries, and have been described as consisting of "continual anarchy, government corruption, rioting and pillage, assassinations, arbitrary imprisonment and religious persecution".

[0]: https://en.wikipedia.org/wiki/First_Portuguese_Republic