OK, so how do the new maps for 2018 potentially affect the special election? I'm specifically thinking if I'm Saccone I loudly announce a promise that if elected to run in the newly re-drawn 14th District where the vast majority of current PA-18 voters reside. Basically making the argument of why elect someone who won't be representing you (or at least most of you) come next year? It basically puts Lamb on the spot to promise he'll run in the new PA-14 rather than against Rothfuss in PA-17 (which of course he'll never do), or admit he'll dump the voters he's currently asking to support him in Greene, Washington, and Westmoreland Counties to instead continue representing only the South Hills portion of the district.
A potential issue for Saccone?
That could be a problem for Lamb, but it'd be pretty easy for Lamb to make carpetbagging accusations against Saccone if the latter decides to run in the 14th.