How to set a marketing budget in uncertain times

Marketers have a unique mix of elements to keep in mind as they set their budgets for 2020. Next year brings the double whammy of a presidential election and the Summer Olympic Games, which means media rates could be higher than usual in certain months. President Donald Trump can make the stock market rise or fall with a single tweet, especially one that mentions China and tariffs. Not enough? How about an impeachment inquiry, which could subject a divided nation to an election-year clash b