Lets try this again... without the meaningless re-direction.
How many U.S. Senate seats did Republicans hold before the election?
How many U.S. Senate seats did Republicans hold after the election?
Here's a link that will help - https://en.wikipedia.org/wiki/2018_United_States_Senate_elections
Don't know but republicans lost all blue state races,8 out of 9 swing state races and 3 red state races and only won their biggest electoral college state Texas by 2.5 points. Democrats got over 10 million more votes in the senate races.Republicans did have one of the best senate election maps ever going for them though.