Of course, because even if these people did not gain the right to vote what happens is they are counted on the census and then the number of representatives for each area is based off the total population so they influence the electorate in big cities giving big cities and even bigger say in Congress and at the local level as well.
It's also a HUGE factor in gerrymandering. Redistricting is out of control and the biggest threat to local politics...ie: Monkeyface, Sillybrand, Schumeroid, et al