What is the origin of the idiom "gray vote" and when to use it?

The origin of the idiom "gray vote" can be attributed to the association of gray hair with old age and wisdom. The phrase gained prominence in the United States during the 20th century as a way to describe the voting power of older adults, particularly those aged 65 and above. As the population of older adults increased and their political influence became more apparent, the term "gray vote" emerged to highlight their significance in elections and policymaking. The phrase has since been widely used in political discourse and discussions surrounding the impact of senior citizens on electoral outcomes and policy decisions.