WASHINGTON, Dec. 23 - Democratic leaders say their party needs to de-emphasize the issue of abortion rights, concerned that Republicans have hurt the Democratic Party by portraying it as an uncompromising champion of abortion. In interviews and public appearances since Election Day, Democratic officials have said that the party should open its doors to abortion opponents and that candidates should make abortion a less central focus of future campaigns. Party leaders said they were not abandoning their fundamental support for abortion rights, but said Democrats should consider accepting some restrictions that enjoy popular support - like parental notification when teenagers...