Can I just say that whatever the Dems accuse the Repubs of doing is usually what they Dems are doing themselves. Back in 2000 a (Republican) friend's son registered to vote for the first time through MTV's "Rock the Vote". My friend was so happy because her son had decided to register as a Republican. Well, come to find out on election day, when this young man went to the polls to vote - HE WASN'T REGISTERED! The dems have been playing this game for a long time.
i would NEVER register to vote in hostile territory. it's a natural tendency for the enemy to simply "forget" to turn in the card.
i've registered many voters, and unfortunately i've met some shady characters (one of whom got in trouble with the law for his fraudulent activities) who've reigstered voters FOR THE GOP. So it happens on both sides, but it's not NEAR as bad as the rats, imo. Most of the guys i've worked with in voter registration for the GOP are honest and trustworthy when it comes to voter registration, but i know one or two who are bad apples.
remember, most are paid for each registration for their party, so even though there are upstanding workers, the voter registration occupation also draws in some shady, used car salesmen types. i know a few who are pretty much homeless types with a few bad habits.
always...ALWAYS... register at a "friendly" booth (the booth of your own party), or at the elections office where you can get a certified proof of registration for a couple of bucks. or simply get a form and mail it in yourself (but make sure to fill it out completely). the forms in california are self addressed, no postage necessary.
that's what i did when i changed my registration address--i walked into the elections office, registered, and then obtained my certified proof of registration and placed it in my glove compartment, so i'll have it with me when i go to vote.