A topic of political and legal substance, instead of mere emotional, resentment, anger, fear, etc.
So the guy McConnell beat in the primary, or even a better GOP candidate could run to replace Rand Paul, if he decided against running for Senate.
In the end I see Rand Paul ahead of Rubio and Cruz among the young Senators in the potus bid, but I don't see him winning.
Grimes has no evidence to look forward to becoming a Senator. She can win a liberal house district, if any exist in the border states. Probably only those with a big black city.