Notice we're not saying all political or non work-related conversations should be eliminated. An office that never talks about anything other than work will ultimately lack a culture and personality that attracts top talent. But politics is very personal to a lot of people, and if a political diatribe upsets a coworker (even if it was unintentional), that fallout could have repercussions both personal and professional in terms of the bottom line. And if you offend a boss with your politics, it might end up costing you a raise, promotion, or even your job.
Only you know the culture of your workplace, so act accordingly and take these tips to heart until the election is over. Then enjoy the next few years until it happens all over again.