district     incumbent       party  first elected        status                                          opponent
0  massachusetts1    john olver  democratic           1991  re - elected                          john olver (d) unopposed
1  massachusetts4  barney frank  democratic           1980  re - elected                        barney frank (d) unopposed
2  massachusetts5  marty meehan  democratic           1992  re - elected  marty meehan (d) 69.8% david e coleman (r) 30.1%
3  massachusetts7     ed markey  democratic           1976  re - elected         ed markey (d) 64.4% brad bailey (r) 35.5%
4  massachusetts8   joe kennedy  democratic           1986  re - elected                         joe kennedy (d) unopposed

Table as JSON:
{"district":{"0":"massachusetts1","1":"massachusetts4","2":"massachusetts5","3":"massachusetts7","4":"massachusetts8"},"incumbent":{"0":"john olver","1":"barney frank","2":"marty meehan","3":"ed markey","4":"joe kennedy"},"party":{"0":"democratic","1":"democratic","2":"democratic","3":"democratic","4":"democratic"},"first elected":{"0":1991,"1":1980,"2":1992,"3":1976,"4":1986},"status":{"0":"re - elected","1":"re - elected","2":"re - elected","3":"re - elected","4":"re - elected"},"opponent":{"0":"john olver (d) unopposed","1":"barney frank (d) unopposed","2":"marty meehan (d) 69.8% david e coleman (r) 30.1%","3":"ed markey (d) 64.4% brad bailey (r) 35.5%","4":"joe kennedy (d) unopposed"}}