This would be very similar to first-past-the-post (third-past-the-post in this case), and has many of the same drawbacks as first-past-the-post, such as lots of strategic voting. Giving a voice to people who’s favorite charities are not wildly popular seems preferable (as would be the case with ranked-choice voting). The fact that you have 100 votes instead of 1 vote doesnt make much of a difference here (imagine a country where everyone has 99 clones, election systems would mostly still have the same advantages and disadvantages).
This would be very similar to first-past-the-post (third-past-the-post in this case), and has many of the same drawbacks as first-past-the-post, such as lots of strategic voting. Giving a voice to people who’s favorite charities are not wildly popular seems preferable (as would be the case with ranked-choice voting). The fact that you have 100 votes instead of 1 vote doesnt make much of a difference here (imagine a country where everyone has 99 clones, election systems would mostly still have the same advantages and disadvantages).