The third rail of a nation's politics is a metaphor for any issue so controversial that it is "charged" and "untouchable" to the extent that any politician or public official who dares to broach the subject will invariably suffer politically. The metaphor comes from the high-voltage third rail in some electric railway systems.
The excerpt has<span> an </span>effective style<span> and </span>tone because it is. formal and objective. Also, <span>It includes a clear topic sentence and provides </span>effective<span> support.</span>
