I came across this graph on the multimedia section of Eyewitness News website - external link just before the final Scottish referendum on 18 September 2014.
Should Scotland be an independent country?
This graph of Scots polled during the campaign shows how opposing “Yes” and “No” votes at the beginning of the campaign converged shortly before vote day, almost changing a more than 300-year union with England, Wales and Northern Ireland.
The graph tells a compelling story of how voter sentiment changed in a short space of time; numbers on their own could not have done that. We can communicate important stories involving numbers by using graphs and tables when designed effectively.