TribLIVE's Daily and Weekly email newsletters deliver the news you want and information you need, right to your inbox. Westmoreland County elections officials on Monday continued to piece together how the race for a district judge’s seat was excluded from mail-in ballots sent to voters last week in four Mt. Pleasant Township precincts. “It’s my responsibility,” Elections Bureau Director JoAnn Sebastiani said of the oversight that led to 189 incorrect ballots being mailed to voters in advance of the May 18 primary. Sebastiani, who took over the top elections bureau job last summer, said no one in her office was aware that a court-ordered redistricting of the county’s district courts, signed into law in October, eliminated one seat, shifted boundary lines and moved four Mt. Pleasant Township precincts into the jurisdiction served by retiring District Judge Mike