It’s been a while since that was true. Democrats have had a several percentage point lead for years.

https://www.washingtonpost.com/news/politics/wp/2018/07/24/o...

PS: It’s also irrelevant as many people identify as independents while actually voting overwhelmingly for a single party. Further, political power has nothing to do with the national popular vote let alone what the non voting public believes. For example Trump won with 46.1% of the popular vote and votes from about 19.5% of the total population. That’s simply how the system works and what shapes politics.