Ben Giles

DNC Chair Ken Martin says the investment is part of efforts to get the party more involved in voter registration.

In the past, he says, Democrats have relied on nonpartisan groups barred from discussing the party's candidates or core values.

Directly involving party leaders from the national to local level will allow volunteers to better connect with voters that Martin says Democrats have taken for granted.

Republicans outnumber Democrats by more than 300,000 voters in Arizona.

For NPR News, I'm Ben Giles in Phoenix.