excellent
will drive the ‘rats crazy stealing yard signs for their own man
And late at night, go around and affix them to the corners of the campaign signs that are up for the Democratic Congressional candidate, if he is) an incumbent; and b) in any significant way supported Obama's election and his first two years of policies.
Technically it really is not defacing or destroying anything as you are not tearing anything down, AND you are not lying, because you are simply affixing "Obama" to an "Obama" supporter.
There would be a lot of adventurous, quick on their feet Young Republican types whom I think would love to do this over the next several weeks across the nation.
Just a thought.