https://www.sciencedirect.com/science/article/abs/pii/S0261379415001195 https://www.sciencedirect.com/science/article/abs/pii/S02613... https://www.researchgat

https://www.sciencedirect.com/science/article/abs/pii/S0261379415001195 https://www.sciencedirect.com/science/article/abs/pii/S02613... https://www.researchgate.net/publication/240633007_Measuring_Campaign_Spending_Effects_in_US_House_Elections https://www.researchgate.net/publication/240633007_Measuring... TL;DR: Spending might matter up to a certain point, but becomes very inefficient. It's also more effective for challenges than incumbents. https://en.wikipedia.org/wiki/Fundraising_in_the_2024_United_States_presidential_election https://en.wikipedia.org/wiki/Fundraising_in_the_2024_United... https://en.wikipedia.org/wiki/Fundraising_in_the_2020_United_States_presidential_election https://en.wikipedia.org/wiki/Fundraising_in_the_2020_United... https://www.washingtonpost.com/graphics/politics/2016-election/campaign-finance/ https://www.washingtonpost.com/graphics/politics/2016-electi...