Mercer County Executive Brian Hughes urged officials on Saturday to “fundamentally change” their election process in the wake of Tuesday’s voting system crash. None of the county’s voting machines were working on Election Day “due to a printing and scanning issue with the ballots,” local officials said Tuesday. What really happened in Mercer County remains uncertain. Although all paper ballots were later tabulated, the mess on Tuesday slowed down counting of the votes. The county is still tabulating votes as of Saturday. Robbinsville Township Mayor Dave Fried said earlier this week that some b…