Most of those Democrats aren't campaigning on BDS either and the polling is inconclusive. It turns on how exactly the questions are asked. The only concrete thing we've actually seen from them is that Americans want their president to negotiate a peace as soon as possible.
She's not negotiating anything yet. She's working with cards dealt by someone else. And she will be doing so as President too because that's the life of a third party mediator.
If you want someone who will wave a magic wand and expect results, vote for Trump.