The study suggests that in 168 marginal seats, the ethnic minority vote is bigger than the majority of the sitting MP.
In reality, the effect on MPs' seats is more complex to measure as voters are not spread evenly across constituencies: some areas within may heavily favour one party, others its main rival.
The seats extend beyond inner-city areas to include places such as Southampton, Oxford, Sherwood, Ipswich and Northampton.
"They distribute it in proportion to the number of seats the party won at the last election.
BBC1's Election 2015 programme had an average of 4.3 million viewers, a 38.5% share, from 9.55pm on Thursday, kicking off with its shock exit poll that predicted an unexpected 316 seats for the Conservatives.
There weren't nearly enough seats, which indicates a Lib Dem commitment to providing their own electoral metaphors.
The gap, though, was not large: Labour have 83 target seats at stake with Ukip as a complicating factor.
The TNS poll gives the SNP a 10-point lead over Scottish Labour among those certain to vote, at 41% against 31%, putting nearly half of the 41 Westminster seats won by Scottish Labour in 2010 at risk.
There was a misplaced confidence drawn from the experience of 2010 when a Stakhanovite get-out-the-vote (GOTV) operation saved scores of seats that David Cameron should have bagged, given the national swing to the Tories.
His party has taken a pasting over the past five years for its participation in the coalition and looks set to lose at least half of its seats.
Further, the junior partner party in the present coalition, the Progressive Democrats, only hold three seats, and yet all are ministers.
