The oldest coast to coast passenger route in the UK is celebrating its 175th anniversary. The route linking the cities of Newcastle and Carlisle opened in the 1830s.
Celebrations have been taking place along the route, Hannah McNulty went along for the ride.
Watch her full report below.
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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.