There are 4.39 million Seniors on the CA Voter File, and an equivalent 4.39 million aged 18-32. So, how do they stack up?
Seniors: 61% turnout in the 18 Primary, comprised 38% of votes cast.
Age 18-32: 17% turnout, comprised 11% of all votes cast.
Seniors: 61% turnout in the 18 Primary, comprised 38% of votes cast.
Age 18-32: 17% turnout, comprised 11% of all votes cast.
This graphic shows the total number of voters of each age 18-80, with a dot for the number that actually voted in the CA 2018 Primary. You can see two humps in total voters representing Millennial and Boomers, and the way that the turnout increases as voters get older. 
But, also, look at this interesting comparison between ALL VOTERS and LATINO VOTERS. In this you can see how Latinos don't have a double hump in registration - they have a single hump, with voters skewed young.
While Latinos had lower turnout, it was lowest among young and lower-income. This shows Latino voters who live in census block groups where the average income is under $50k. A whopping 45% of these registered voters are ages 18-34 with just one-in-ten casting a ballot.
