Special interest parties are a good deal, but only when there are enough of them, i.e. >2. Opening up US Congress to be more representative would do a lot to precipitate the creation of other parties, which in turn would reduce much of the current penchant for deadlock. Of course, moving to compulsory voting like OZ would perhaps lead that way as well.

Added later

Please Note: I did not start this thread. It was started by another to post about a cyclist's political party in Australia. I reckon the OP deleted his or her post. In any case, all other posts have now lost context.