Final answer:
Each characteristic is examined to determine its applicability to the national committees, congressional committees, or both. The presidential nominating convention is handled by the national committee only, while both types of committees have chairs selected by party caucuses in Congress and consider fundraising a primary responsibility. The focus on the presidential race is a function of the national committee.
Step-by-step explanation:
We are tasked with determining whether specific characteristics are applicable to the parties' national committees only, the parties' congressional committees only, or both.
- National committee only: This is true for activities such as the presidential nominating convention. Only the national committee may have an account for this purpose.
- Focuses on the presidential race: This is typically the role of the national committees, as they are mainly responsible for the coordination and funding of presidential campaigns.
- Has chairs chosen by party caucuses in Congress: This corresponds to both national and congressional committees, as these chairs are selected by their respective party caucuses within Congress for various leadership roles.
- Has fund-raising as its primary responsibility: Fundraising is a primary responsibility of both national and congressional party committees, each having separate accounts and limits for their fundraising efforts.