Since the 1970s, the number of Labour MPs who have done manual or clerical work has fallen steadily. A growing number of parliamentarians have been to private schools.
David Skelton, Deputy Director of the think tank Policy Exchange tells Around The House that the gap between voters and politicians is highlighted in tough times for the economy.
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The constituency of Washington and Sunderland West includes the UK's largest car plant, which was opened by Nissan in 1984.
This seat was formed prior to the 2010 General Election, taking in Sunderland city centre and the Ryhope area to the south.
The constituency of Stockton South includes relatively affluent areas like Yarm and Eaglescliffe.