contributions, then I would think the large donors may be most impacted by the changes in the tax laws. When I say "large donors" I am not only considering individuals who gives a large sum of money to a charitable organization, but also individuals who donate large sums of money as whole to multiple charitable organizations.

I do think if an individual truly believes in a cause, then the change in tax laws will have no impact on how much is donated to that cause. However, if an individual doesn't truly believe in the cause or has questions about the "best use of the donation" now that the tax benefits are gone, then it could have an impact. It may even lead to quasi competition among the charitable organizations regardless whether the individual maintains or reduces the amount donated each year.