Main political parties prepare for election fight

The transcript discusses the upcoming election campaign, highlighting the efforts of party leaders to convey their messages. Liberty has made five pledges focusing on economic recovery and job creation. David Cameron emphasizes the need for change and criticizes the current government. The Labour Party faces criticism for its promises, while public skepticism towards politicians remains high. The electioneering is in full swing, with all parties aiming to reach a broader audience.

What is the significance of marginal constituencies in the upcoming election?

What does the speaker imply about the promises made by politicians?