Why Might Parties at the State Level Have Less Power

Why might parties at the state level have less power than those at the national level?

A) The creation of party primaries took control of the nomination from party leaders and gave it to the voters.
B) Local issues are usually not ideological in nature.
C) The rise of media campaigns made candidates more reliant on money than local party volunteers.
D) Legislative campaign committees raise money from individuals and interest groups and then distribute it to candidates at the national political party level, thereby weakening the influence of the state party.