Social media has played an important role in the general election campaign, with presidential candidates and major parties publishing a plethora of videos, speeches and promises online as they try to win over Uganda's youthful and increasingly tech-savvy population.
However, his main rival - the pop star turned politician Bobi Wine - has a significantly bigger presence on social media platforms and the move by the communications regulator may be designed to suppress and hinder Mr Wine and his hopeful supporters.The 38-year parliamentarian has cast doubts on the poll, telling Sky News:"The election is being stolen and rigged.
If Mr Museveni does claim victory on Thursday, many expect supporters of Mr Wine and his National Unity Platform party to voice their outrage in country-wide demonstrations.