Mr. Romney attracted far more independent women than Mr. Santorum in Michigan, while they split the same segment in Ohio.
Belgian political parties divided along French- and Dutch-speaking lines four decades ago, and most voting districts are split the same way.
According to Iraqi journalists, Iran's influence in the country's war against Isis is split the same way the country is: dependent on the ethnic or sectarian make up of the population in each place.
Some of the chains have been seeking relief by trying to strike agreements in which they split the same percentage of the weekly gross, whether it's opening weekend or not.
"The W likes to believe that they cater to the same market that we do, and we do split the same local demographic that's drawn to the night life that we both offer," said Mr. Morgan of the Mondrian.
Interestingly the breakdown by social class shows the AB votes split the same way for Labour and the Tories, that is more ABs say they will vote Labour than Tory.
"If actual voters split the same way as the likely voters in polls, it doesn't matter where you draw the line," said Michael R. Kagay, news surveys editor of The Times.
Like Gertz, many US families are trying to make ends meet on low wages and each month have to figure out how to split the same small paycheck to pay bills that only seem to go up.
If Nigeria were to split, the same corruption, clannishness and miscellaneous chafes would accompany each division.
The Cavalier and Corsica/Beretta were completely different cars, made at different factories, with different parts, but they were almost exactly the same size, sold in the same showrooms and they split the same market.
