ITV News correspondent Dan Rivers took to a boat on the swollen River Parrett in Somerset to hear from the people living along its banks who feel let down by the Environment Agency.
"It feels like we're being forgotten, left behind, and that we don't matter," one resident said.
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Ukip leader Paul Nuttall also said he would want to get rid of Sharia courts.
Over 40,000 people picked up their packs to take part in the annual marathon in the capital.
The country's voters are concerned about security, the economy, and the 10% unemployment rate.