A new analysis of census data shows millennials are now tied with baby boomers for the largest percentage share of eligible voters.

The Pew Research Center says that boomers hold a slight edge with a total of 69.7 million voting-age baby boomers, compared to 69.2 million millennials. But the figures comprise about 31 percent of the electorate each.

While millennials have nearly as many potential voters as baby boomers, Pew says they lag far behind when it comes to actual voters. Census turnout estimates reviewed by Pew show just 46 percent of eligible millennials voted in the 2012 presidential election, compared to 69 percent of baby boomers.

Pew announced last month that millennials had overtaken baby boomers as America's largest living generation.