I don't think the Democrats will gain the Senate.
I notice that there are only at present 8 Democratic senators in the South and five are up for election.
On paper, Louisiana and Florida should be 'safe' holds, with North Carolina competitive - but I expect to Republicans to gain Georgia and South Carolina.
Democrats should pick up Illinois no problem. They have a fighting chance of gaining Alaska and Colorado. Even if successful it's insufficient to gain control of the Senate.
Dave
Hey, another Brit!
Welcome to the forum