Factual error: In the whole episode, Romania is depicted as a monarchy with the king in a position that allows him to make political decisions. However, Romania ceased to be a monarchy in 1947. By the time depicted in the episode (circa 1997), Romania was a republic and its head of state was the president. Members of the ex-royal family did not hold any positions in the Romanian government and were certainly not authorized to represent Romania in international events.
Stay Tuned - S1-E17
Continuity mistake: When Tom and the English teacher walk into the campaign HQ, a shot is shown of a security guard glancing up the stairs, and a blonde woman carrying a poster walking past. After Tom and the teacher have finished having a conversation with a balding man wearing glasses, the exact same shot is shown again.