Before you blanket "Democrats" supporting this issue, I think you'd better talk to a few more people. Both Arlen Specter and Rick Santorum, as well as state representatives have been INUNDATED with letters, phone calls, emails. This issue isn't going to go away. In Harrisburg at the moment, the City is trying to seize some "historic" mansions via eminent domain, because the owner of the mansions wants to tear them down and build high rise condo complexes overlooking the Susquehana River. Stephen Reed who IS a Democrat, is trying to seize the mansions, because of their disputed historic presence in the neighborhood. He is not trying to seize property to build a shopping mall, but he, and many others believe that these mansions belong in Harrisburg's history. He has said numerous times the idea of taking people's property against their will is outrageous, but here he feels like letting these mansions be torn down will VASTLY change the scope of the neighborhood, and inconvenience MANY of the residents who've lived there for many years.
As Mayor, he's torn between his own convictions, and doing what the RESIDENTS in that particular neighborhood want. Many people outside of that neighborhood are torn on this issue, because in fact, while the loss of any property is too much, the idea of tearing down buildings with historical value is something many cannot condone either.
It's not always as cut and dry, as the case in Connecticut, which the Supreme Court decision came about. It's also not a "culture of hate" that directs Republicans to be against this decision. It is the right for a man and woman to keep their castle. It is also, as Justice O'Connor in her descent wrote:
"Any property may now be taken for the benefit of another private party, but the fallout from this decision will not be random. The beneficiaries are likely to be those citizens with disproportionate influence and power in the political process, including large corporations and development firms." She argued that the decision eliminates "any distinction between private and public use of property—and thereby effectively [deletes] the words 'for public use' from the Takings Clause of the Fifth Amendment".
http://en.wikipedia.org/wiki/United_States_Constitution/Amendment_Five
Perhaps instead of making blanket generalizations, and stereotypical remarks, a little research upon the subject may bring a little more clarity of the issue to you.