As was said previously, it depends geographically where you are because a " swamp" can change drastically from one are to the next.

From my perspective, since moving to New England 8 years ago, I have focused intently on hunting the swamps in my area. Most of them around here are pretty thick Hemlock swamps, not always under-water, but moist most of the time with puddles here and there.

And I have had great succes with " Swamp Islands" , usually around the size of 10 yds. x 50 yds. (some bigger some smaller) The does like to bed on them and I find the bucks cruising these islands looking for them, making scrapes, rubs and chasing does. I also focus on the edge that is created between the hardwoods and the swamp and have found the deer use this habitat intersection as a travel-way. And the last few seasons I have cut paths directly throught them and have deer using those paths, this season will be the first that I will seriously hunt those paths I have cut so I will report back on my success!