Assertion: legislation's effect | /r/HasProperty | declining
Facets:
value: since the 1950s
type: TEMPORAL
value: possibly
type: DEGREE
Source sentences:
text: Some political scientists speculate there is a coattail effect (when a popular president or party position has the effect of reelecting incumbents who win by "riding on the president's coattails"), although there is some evidence that the coattail effect is irregular and possibly declining since the 1950s.