At this point you should be hoping to end up with more than 45 seats this election in order to win back the Senate at all in 2018.
The problem for Democrats is that the same early general polls that show Clinton crushing Trump in a landslide show most incumbent GOP Senators leading their Democratic opponents (sometimes by wide margins). The only Republican who appears kind of doomed is Ron Johnson.
Maryland? I think Republicans should focus on picking up NV, and defending PA, FL, and OH. Those are their four firewall seats for holding the Senate. If this was a midterm year, and Szeliga was running against Edwards, then maybe Maryland would be competitive, but I don't think so.
You're probably right, but it doesn't hurt if they at least spend some time and money there. If her numbers don't improve, they can still pull out of the state later. If only the CO GOP was running as good candidates as the MD GOP, lol.