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UKIP has been described as the 'marmite party' - even the party's leader Nigel Farage has said you either love him, or hate him.
In the South that division is as strong as anywhere. Our Political Correspondent Phil Hornby has been looking at what people across the ITV Meridian region make of UKIP:
South West Surrey is a largely rural constituency which includes the towns of Farnham, Godalming and Haslemere.
The seat has been held by the Conservatives since its creation in 1983.
It is currently represented by the Health Secretary, Jeremy Hunt. In 2010, he secured 33,605 votes - a majority of more than 16,000. The turn-out was 74.8% - one of the highest in the country:
The Southampton Itchen constituency was created in 1950 - and covers the eastern part of Southampton, the eastern docks and the city centre. It is one of only two Labour seats in the Meridian West region - and is one of the most marginal in the UK.
Labour's John Denham has been in place since 1992 - but is not standing this time. He won in 2010 with a majority of just 192 votes. The turnout then was almost 60 per cent.
The constituency of Winchester is a parliamentary seat that has been both yellow and blue in the last decade. The cathedral city is at the heart of the constituency, but it also includes surrounding places like Alresford, Chandler's Ford, Colden Common and Sutton Scotney.
The sitting MP is Conservative Steve Brine who won the seat from the Liberal Democrats in 2010 securing 27,155 votes - a majority of more than three thousand. Voting turnout was almost 76 per cent. Our correspondent Christine Alsford reports.
Voters across the South have been reacting to last night's Leaders' Debate on ITV. Find out what our groups of undecided voters thought. The same as you maybe? Richard Jones reports
This seat is unusual as the green party holds the Brighton Pavilion and Caroline Lucas is hoping to defend the seat. Named after the iconic Royal Pavilion, this relatively affluent seat encompasses the heart of the city, such as The Lanes and the bohemian North Laine shopping area. Conservatives held the seat until 1997 when Labour won it back for 13 years in the two subsequent elections.
Fred Dinenage has the latest on Brighton Pavilion.
Kate Bunkell has our first election profile - looking at key constituencies across the region.
Latest ITV News reports
ITV's leaders' debate programme will be a test for all of the heads of the political parties but deciding who won or lost is not the point.
'Floating voters' in the region have been telling ITV Meridian the questions they want answers to at the ITV Leaders' Debates.