Reading between the lines of election speeches

What can you tell from a party leader's pre-election speech?

Here are three speeches, as analysed by Wordle, a website which creates a picture giving greater prominence to more frequently used words in a piece of text.

Gordon Brown speech (10 February): 

David Cameron speech (27 March):

Nick Clegg speech (14 March): 

Favourite words were:

Gordon Brown: future, Britain, change, Labour, every

David Cameron: want, people, Government, going, country

Nick Clegg: Liberal, Democrats, change, people, tax

When you put all three speeches together, this is what you get:

I can therefore exclusively reveal that what these party leaders agree about is that 'people want change'. 

They're right: I met one of them sitting on the side of the pavement this morning.