Our CITY has already started it -- we just had a recall and another important vote -- both by mail-in ballot, got a whopping 51% returned... people are even too lazy to fill it out, sign it and mail it back.
More phone banks.
My problem with mail in ballots is the anonymity. I don't even like to fill in the Census form. When I vote, I want it to be private. Maybe that is why the response is (partially) low.
No elected government should know which people voted for them, and which voted for their opponent.
What I mean by phone banks is that with mail voting candidates can canvass lots of home by phone, encouraging people to pick their candidate right there and mail it in. They can (and will) use scare tactics and other tactics over the phone to "get out the vote".
We have a 50(?) yard rule - no campaigning within X yards of a polling station. With phone banks calling people telling them how to fill out the application, it is a violation of that spirit.