Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| district | incumbent | party | first elected | result | candidates |
| pennsylvania 6 | gus yatron | democratic | 1968 | re - elected | gus yatron (d) 69.1% norm bertasavage (r) 30.9% |
| pennsylvania 7 | robert w edgar | democratic | 1974 | retired to run for u s senate republican gain | curt weldon (r) 61.3% bill spingler (d) 38.7% |
| pennsylvania 9 | bud shuster | republican | 1972 | re - elected | bud shuster (r) unopposed |
| pennsylvania 12 | john murtha | democratic | 1974 | re - elected | john murtha (d) 67.4% kathy holtzman (r) 32.6% |
| pennsylvania 15 | donald l ritter | republican | 1978 | re - elected | donald l ritter (r) 56.8% joe simonetta (d) 43.2% |
| pennsylvania 17 | george gekas | republican | 1982 | re - elected | george gekas (r) 73.6% michael s ogden (d) 26.4% |
| pennsylvania 18 | doug walgren | democratic | 1976 | re - elected | doug walgren (d) 63.0% ernie buckman (r) 37.0% |
| pennsylvania 21 | tom ridge | republican | 1982 | re - elected | tom ridge (r) 80.9% joylyn blackwell (d) 19.1% |
Title:
united states house of representatives elections , 1986
Statement:
when bud shuster was the incumbent , he won 69.1% of the votes
Answer:
refuted