The party leaders from the ruling coalition -- Conservatives and Liberal Democrats -- and Opposition Labour redoubled their efforts to win over the electorate in one of the closest elections in British history where every vote will count.
The British Parliament is made up of 650 seats with 326 required for a majority. In the last elections in 2010, which also presented a hung result, the Tories had 307 and Labour 258.
For the first time, in this year's elections, it is predicted there are a significant number of seats where the migrant vote is likely to have the biggest impact -- areas where there are large numbers of eligible migrant voters and a relatively small majority for the sitting MP.
In this so-called "migrant power list" there are 12 Opposition Labour marginal seats, six ruling Conservative seats and two held by the coalition partners Liberal Democrats.
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"The ethnic minorities are seen to be the core of Labour party vote, they have been for years, for decades but...The percentage of people who identify with the Labour party is falling very fast," says Dr Maria Sobolewska, an expert from Manchester University and part of the team which conducted the study.
The ruling Conservatives, led by Prime Minister David Cameron, had only attracted 16 per cent of ethnic minority votes at the last election in 2010 and are seeking to address that by fielding 12 Indian-origin candidates in these elections.
The opinion polls reflect a neck-and-neck race with the latest YouGov opinion poll for the 'Sun' indicating the Conservatives and Labour both at 33 per cent, with anti-immigration UKIP on 12 per cent, and the Liberal Democrats gaining two percentage points on 10 per cent.