fhtagn vote Northam if only because it helps ensures neutral redistricting
Otherwise Gillespie and Republicans are no doubt planning to rig the maps in 2021 but also no doubt to gerrymander the state Senate map as soon as Gillespie worms his way into office next year (if he wins).
It's not just redistricting. A democratic governor is pretty much the only thing standing in the way of a full bore social conservative agenda in Virginia. Just take a look at some of the stuff McAuliffe vetoed in the past 4 years. That's what you can expect from a Gillespie governorship.
Stupid McAuliffe vetoed the bill legalizing switchblades this year. Stupid McAuliffe.