Here is a strategy that I believe that cannot fail.
It seems that 34% of the GOP ads aired in House races this year have featured an anti-Pelosi theme and this trend should continue. The GOP has nothing to sell, even the Tax cuts will be deemed to be a dud for the working class by November leaving the GOP with a single issue, 'we must not let Pelosi become leader of the House".
All the Democratic candidates running for a House seat must take a public oath not to support for Pelosi for Leader. Then in early November Pelosi resigns from the House since only a Democrat can win that seat. (There have been rumors of Pelosi retiring before this years mid-term elections.)
Take the House and lose Pelosi, what's not to like about it?