Voters turn out to cast ballots at a polling place in Catonsville. (Lauren Loricchio/BSMG video)

After years of having two Baltimore County residents and one Howard County resident represent the 12th district, Tuesday's primary election flipped that representation upside down.

District 12, which was redrawn in 2012 to include portions of Howard and Baltimore counties, was the most crowded of the local primary races, with 10 Democrats competing for three open seats, left vacant by the district's retiring incumbents, Dels. Liz Bobo, Steven DeBoy and Jimmy Malone. Malone and DeBoy lived in the Arbutus area of Baltimore County.

Columbia physicians Clarence Lam and Terri Hill were the clear front runners on June 24. Lam had about 21 percent of the vote and Hill had a little more than 20 percent.

Catonsville teacher Eric Ebersole, at 15 percent, had the next strongest showing in what some observers had predicted would be a race for third place in the district, which stretches from Columbia to Catonsville.

The results mean that there will be two Democrats from Howard County and one from Baltimore running in November.

The three Republican candidates, Baltimore County residents Joe Hooe, Gordon Bull and Rick Martel, had no challengers and will advance to the general election.

Hill said she thought all members of the district should still feel well served.

"Everybody's got to be from somewhere and as a physician on call 24/7 for years, I have yet to ask the patient who called me where they live," she said.

The next closest candidate, Catonsville small business owner Rebecca Dongarra, trailed by a little more than two points, at 12.72 percent.

Following Dongarra were Nick Stewart (10.09 percent), Renee McGuirk-Spence (6.36 percent), Brian Bailey (5.33 percent), Michael Gisriel (4.18 percent), Adam Sachs (2.5 percent) and Jay Fred Cohen (1.93 percent).