Many people believe the right of a woman to chose what she does with her body is fundamental.  Even more important than any rights of an unborn child within her.   For these people, they would want to elect highly obstructionist politicians to prevent laws being passed invading.this right of choice.  For many of these people, there is no room for negotiation.  To not obstruct such laws is political failure.

 Many people believe that if the government is ordered to stand down or doesn't have the resources or ability to assist in the protection of life and property, then people will be left to fend for themselves.   For these people, the right of self defense is fundamental.  These people want the proper tools and training to meet their adversary.  Confiscation will never be acceptable.  For many of these people, there is no room for negotiation.  To not obstruct such laws is political failure.

In the examples above, obstructionists are working diligently for their causes.