if you are a "decline to state" or not registered with a party, you must ask for a democratic ballot or else they'll give you a nonpartisian ballot.
then you must fill out the democratic bubble as the party you've crossed over to. this need to fill out a democratic bubble appears to be only in los angeles county.
by all means, read the instructions or your vote won't be counted. declined to state voters are important for obama's win.
California law states that Decline To State voters may vote in the Dem primary but to do so must request a Democratic ballot. This may sound simple, but the thing is, if DTS voters don't make this request on Tuesday, they will be handed a non-partisan ballot, which will have everything but the presidential contest on it.huffington post.
