Women voters and national security — these are the keys to New Jersey’s evolving electorate. Once considered by most observers to be a safe bet for Democratic challenger John Kerry, New Jersey’s presidential race has caught the attention of partisans from both camps. President George W. Bush lost this state to Al Gore by 16 points in 2000, but recent poils indicate a tight race. So what has changed? It seems to be the issues rather than the electorate. And the latest Star-Ledger/Eagleton-Rutgers Poll indicates that the Garden State’s 15 electoral votes may hinge on whether female voters feel safer with Bush or Kerry as their president.