Nick Clegg at 2010 Sheffield Hallam vote count

The video begins with a friendly greeting and a question about constituencies. The speaker expresses personal concerns about getting results and asks about the facts related to constituents. The conversation touches on the effects of actions taken, though the speaker admits to not knowing the full impact.

What was the speaker's reaction after stating they just did something?

What does the phrase 'Have an effect. Come back.' imply in the context of the conversation?