something that emotionally motivates people to buy one product over another; also, any goods or services that take advantage of this motivation
Losing weight is the hot-button issue of the day.
Nor is abortion quite the hot-button issue in American politics it used to be.
Although any hot-button issue can lay bare the way fear fuels money in politics, the gun issue does it best.
However, the ongoing bloody conflict between Israel and Palestine is apparently still too scorching a hot-button issue to touch.