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There are many tactics that can be adopted and many things that can be done, But it all depends on the intensity of heat or cold one is facing. I think its time for the person hidden inside you to come out and explore yourself and all those skills and qualities written in the resume (specially the team work, problem solving and leader ship one's) and get involved as it is the politics which brings out the leader inside you.
Having said all above, I think three things are really important in work life which really have helped me a lot, First " Be positive" secondly "take control" and finally " respect every one" no matter who and where the person is from or which ever group he belongs to "ignore the arrogant one's".
Finally consult or read professionals in this matter.