The tally of donations for key Senate races kept by OpenSecrets.org, shows the size of the big bucks that went for the purpose of unseating incumbent Republican officeholders, and preventing new ones. https://www.opensecrets.org/news/2020/11/senate-democrats-raised-much-went-to-losing-candidates/
The Democratic contenders lost in six of the seven top races. The candidate funds spent in the top 10 most expensive Senate races adds up to $996.22 millions. The top three donors are Sheldon Adelson, Michael Bloomberg, and Tom Steyer, according to OpenSecrets.org
SOUTH CAROLINA. Jaime Harrison (D) deployed $107,568,737— the highest warchest for Senate in the nation, and he still lost to Lindsey Graham (R), who raised $68,767,167, for the fourth highest Senatorial warchest.
ARIZONA. Mark Kelly (D) raised $88,856,406, the second highest Senatorial campaign warchest in the nation, and he succeeded in beating Martha McSally (R), an appointee officeholder, who raised $55,772,809, the sixth highest nationally.
KENTUCKY. Amy McGrath (D) raised $88,098,919, the third highest amount in the nation, and she lost to Majority Leader Mitch McConnell (R), who raised $50,772,809, the seventh highest Senatorial warchest.