Rhode Island held gubernatorial elections every two years until 1996.
1986 is where things got tricky, as I was unable to find a New Hampshire result that was something other than a percentage (can't find anything for Connecticut or Maine either).
Rhode Island,
Massachusetts and
Vermont have comprehensive data going back to the mid 70s.
1998Republican - 2019962 (48.47%)
Democratic - 1767835 (42.42%)
Other - 379528 (9.11%)
1996Democratic - 463719 (61.71%)
Republican - 253482 (33.73%)
Other - 34233 (4.56%)
1994Republican - 2496201 (53.02%)
Democratic - 1542442 (32.76%)
Other - 668979 (14.21%)
1992 (now includes RI)Democratic - 681239 (55.54%)
Republican - 500597 (40.81%)
Other - 44775 (3.65%)
1990Republican - 2226913 (45.74%)
Democratic - 2030212 (41.70%)
Other - 611470 (12.56%)
1988Republican - 575933 (52.21%)
Democratic - 504062 (45.69%)
Other - 23177 (2.10%)