A recent study on voice search indicates that content is more likely to be returned for a query if it ranks in the top 3 web search positions.
SEMRush conducted an in-depth analysis of over 50,000 queries to find out which are the most essential ranking factors behind voice search.
In addition to ranking in the top 3 positions, content is also likely to be returned for a voice query if it’s contained in a SERP feature.