In the recent update of The New York Times's article Who Will Be President? the authors used an interesting and a slightly controversial infografic, consisting of 16 sparklines. The graphic depicts the trends of Donald Trump's winning probabilities in the states, where his chances have increased most over the last two weeks.
Unfortunately, the visualization fails to convey a proper picture of the trends due to inconsistent scaling of charts, proving once more, that the correct scaling is still one of the hardest problems in data visualization. We'll present 3 alternative solutions that allow the readers to properly assess and compare changes across the states.