This post has too many wes and thems in it to be comprehensible. Who is the "them" you want to be "linked" to "trump"? Who is the "they" who hope the Dems destroy Trump "in private"? And why do you think tying "them" to Trump would work in a close race, anyway? Trump's unfavorables are more or less on par with Clinton's at this point.
My bad, "them" = Republicans politicians. I am speaking from a partisan position and my main point is that the appeal to republican voters isn't working. It's putting doubts into the minds of liberals who are already wary of Clinton. She is better served trying to appeal to democrat leaning voters than republican leaning ones.
The problem is that a "tie Republican politicians to Trump" strategy isn't going to work in places where Trump is relatively popular, like Missouri, and isn't going to be particularly effective in places where Senators haven't endorsed Trump, like Illinois. It could work in Illinois and parts of Pennsylvania, but might backfire in Downstate Illinois and in places like Luzerne County, Pennsylvania. So, tying a congressional candidate to Trump in metro Philly might be a good idea, but tying a statewide candidate like Toomey to Trump could potentially backfire. And statewide places where it would work, like California and New York, it will be completely irrelevant, as Democrats will win there, anyway.
