Liberal Democrats launch new anti-Brexit poster vans

The video discusses a political campaign focusing on Conservative and Liberal Democrat marginal seats. It accuses Boris Johnson of lying and being unfit for office, highlighting the Liberal Democrats' role in challenging the Conservatives. Concerns about a hard Brexit and its potential consequences are raised, concluding with a call to action.

How do the Liberal Democrats plan to challenge the Conservatives?

What is the significance of the phrase 'hard damaging Brexit' in the context of the text?