Yes, it matters, as the latest data shows. Betapolitics:

Inflation rose from 3% in February to 3.4%. The Retail Price Index rose to 4.4%. The consequence of this is that most of us are becoming poorer. The British economy only grew by 0.2%, making it unlikely that there will be many inflation-matching pay rises in the near future. None of this may be as televisually exciting as exploding volcanoes or beautiful Liberals but when it comes to deciding elections I am with Bill Clinton; “It’s the economy stupid”. 

All of which makes the Thursday debate on economics David Cameron's best chance to grab a clearer lead. I'll be live-blogging for the third time.

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