Virginia legislative primaries to decide nominees for November general elections

Virginia holds legislative primaries for both the state Senate and the House of Delegates on June 11, 2019.
Virginia has been under divided government since 2002. Gov. Ralph Northam is a Democrat while Republicans hold majorities in both chambers of the state legislature. If Republicans retain control of the Senate or the state House, Virginia will remain under divided government. If Democrats win both chambers of the legislature, they will have a trifecta and full control of the government during redistricting.
Republicans hold a 21-19 majority in the state Senate and a 51-49 majority in the state House. 
Fifteen incumbents—nine Democrats and six Republicans—face primary challengers.
According to data from the state Department of Elections and local parties, there will be at least 16 primaries for state Senate seats and at least 19 primaries for seats in the state House.
Virginia uses a unique primary system in that local parties can hold party caucuses or nominating conventions in place of primary elections to select their nominees. In a caucus or convention, party members or delegates meet and choose a nominee according to defined rules. Ballotpedia has determined that parties in at least 28 districts in Virginia are selecting their state legislative nominee via convention in 2019.
Ballotpedia has identified 12 primaries as battleground races this year—seven seats held by Democrats and five held by Republicans. There are six battleground primaries each in the Senate and House.
In all but one race, the incumbent is seeking re-election. 20 incumbents faced at least one primary opponent In the four House of Delegate elections since 2011. Four incumbents lost – meaning 16 incumbents—80%—won their primary. In the two state Senate elections since 2011, five incumbents faced at least primary challenger and four of those, or 80%, won the primary.
This election will take place using court-ordered state House district maps redrawn by a special master earlier this year, which changed the boundaries of 25 districts. Under the old maps, Hillary Clinton won 51 districts in 2016 while Donald Trump won 49. Under the new maps, Clinton would have won 56 districts (7 currently held by Republicans) while Trump would have won 44 (none currently held by Democrats).
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