With the election campaign one week in, the contours of each party’s pitch to the nation are already beginning to become clear. As is one reality: the Tories are willing to take big risks.

With the Conservatives around 20 percentage points behind Labour in average opinion polls with just five weeks to go, they need to find something fast that changes the race dynamics.

For this week’s Westminster Source, Ben Riley-Smith, The Telegraph’s Political Editor, unpacks the four proof points that show it is the Tories taking the gambles in the campaign.

But will it work?

Watch Ben’s video analysis above. Find more episodes of Westminster Source on The Telegraph’s YouTube channel.