Definition
A small entity whose characteristics happen to reflect that of the whole state or nation. The American state of Nevada is a bellwether state for presidential elections in that, with only one exception, it has voted the same as the whole country for a century. The Australian electorate of Eden-Monaro has voted in a government MP at every election since 1972. A bellwether is a ram with a bell attached to indicate to the farmer where the flock is when not in sight.