Sacramento and a few other California counties will have a new voting system in place during next year's statewide election. The others include Napa, Nevada, and San Mateo Counties. All registered voters will receive mail-in ballots, while countywide voting centers will replace traditional neighborhood polling places.

Mindy Romero is the Director of the California Civic Engagement Project at UC Davis. She says these new centers could increase voter turnout and help Democrats pick up seats in the 2018 midterm elections.

"California is very much going to be ground zero because about a quarter of the seats the Democrats are looking to pick up are right here; seven seats here in California. Probably the most vulnerable are Jeff Dunham down in Turlock and Darrell Issa down in the San Diego area," Romero said. 

Romero says on the GOP side, there are several races Republicans are hoping to flip, including Sacramento's Ami Bera.

Romero will speak on Tuesday at the UC Davis Center for Regional Change in Downtown Sacramento about the latest research on vote centers.

Every year, pundits comment on how changing demographics will change the next election cycle, but is there evidence to prove it?