Liberal Democrats election broadcast shows Ed Davey with

Exclusive: Personal video aims to highlight work of carers and familiarise party leader with voters as it targets 50 seats

UK general election live – latest updates

The Liberal Democrats have used their first election broadcast of the campaign to show Ed Davey in a highly personal light, part of a focused and targeted approach that the party hopes could win them close to 50 seats.

The broadcast includes footage of Davey at home as he looks after his teenage son, John, who is disabled, in part to highlight the work of carers but also to try to introduce the Lib Dem leader to voters who might know little or nothing about him.