Final answer:
Most of the money raised by a candidate for Congress comes from individual contributions. Small donors who give less than $200 collectively contribute a significant amount of money. PACs and political parties also play a role in campaign funding.
Step-by-step explanation:
On average, most of the money raised by a candidate for Congress comes from individual contributions. According to the information provided, the majority of direct campaign contributions in congressional elections come from individual donors. Political donations allow people to participate in politics by contributing to the candidate or party of their choice. While individuals can contribute up to $2,900 per candidate per election, small donors who give less than $200 collectively contribute a significant amount of money. PACs and political parties also play a role in campaign funding, but individual contributions are the primary source of funds.