"beginning at the se corner of the intersection of olive & 270, thence south 350 feet, thence west 350 feet, thence north 440 feet, thence east 460 feet." is this a good metes and bounds description?

No, because it does not start and end at the point of beginning.

Explanation:

Metes and bounds description:-

Metes and bounds describes the boundaries or the limits of the property or a land which can be identified by the natural landmarks. The example of such descriptions includes the landmarks of rivers, roads, trees, etc. The system must have a starting and an end point descriptions.

This system has been used for many centuries in England , and this system is still used in definition of the general boundaries.

Thus, from the question, it is not a good metes and bounds description as it should have specific starting and end points descriptions.

i believe that the answer to the question provided above is that the role of campaign committees is to act as a bridge between state and local campaigns.