The biggest drawback of the need for large amounts of money to campaign is that

The biggest drawback to the need to finance a political campaign with large sums of money is that it favors the participation of wealthy candidates and it excludes the non-wealthy from political participation.

Explanation:

In some political systems like the United States, candidates who want to run for public office need to also fundraise in order to have the money to produce campaign materials and to canvass for support among voters. This puts wealthy people at an advantage because they can finance their own campaigns to some extent, and they also tend to have connections with other wealthy donors who can help finance their bid for office.  Candidates who are not wealthy have less opportunity to run for office because they lack the connections to powerful people and they lack the funds to jumpstart their campaigns.  

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.

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