San Diego County Registrar of Voters Michael Vu is predicting that about 35-percent of the 1.5 million registered voters will cast ballots in the primary election.  Polls are open from 7am to 8pm.

In the Primary election, the top two vote getters will face off in November unless the top candidate receives 50-percent plus one and if so, he or she wins on Tuesday.

Locally, the most watched races include the District Attorney's race where incumbent Bonnie Dumanis faces two challengers, Robert Brewer and Terri Wyatt; and the 52nd Congressional District race where Democrat Scott Peters, the incumbent, is challenged by Republicans Carl DeMaio, Kirk Jorgenson and Fred Simon.  There are also San Diego City Council seats and one contested County Supervisor seat.

Statewide, voters are casting ballots for Governor and other statewide offices.

Propositions include Props B and C in the city of San Diego. They concern a proposed buffer zone in Barrio Logan between residential areas and industrial areas occupied by San Diego's ship builders.

Another local measure that has received a lot of attention is Prop H, which would extend the lease agreement by Grossmont Hospital with Sharp.