Horn and Roberts forced into November runoff

SAN DIEGO - For the first time in 12 years, there will be a runoff election in a San Diego County supervisor's race.

Incumbent Bill Horn was forced into a November runoff, and with ballots still being tallied, Ron Roberts was hovering right around the 50 percent mark needed for an outright win.

Horn received 46 percent of the vote in District 5, with Vista City Councilman Steve Gronke in second place with 21 percent.

Horn will take on Gronke in the general election. He could have held his seat if he'd gained 50 percent plus one vote.

''This is exactly what I hoped would happen -- that we'd kee...