My curiosity got the best of me and I had to look around and see if any new polls were out for Indiana.  Since it wasn't listed here, I thought I would post it.

http://www.southbendtribune.com/apps/pbcs.dll/article?AID=/20080424/NEWS07/284272668/1129/News

Compared to the last Research 2000 poll in Indiana from April 3rd,
Obama 48% (+2)
Clinton 47% (-2)

Obama's had ads running here in north-central Indiana for weeks now.  Today I saw my first Hillary ad.

In Goshen, Indiana, just about 20 miles east-southeast of South Bend, I have seen no Clinton ads in any yards as of yet.  I've seen at least 15 Obama signs across town though.