The coattail effect is defined as the inclination for a well-known political party pioneer to pull in votes in favor of different applicants of a similar party in a decision. For instance, in the United States, the gathering of a successful presidential hopeful will frequently win numerous seats in Congress also; these Members of Congress are casted a ballot into office "on the coattails" of the president.
On the contrary, a new conception of this tendency is the reverse coattail effect, that initially was a term authored by Ames (1994) and it is more specifically understood as managing the ability of neighborhood party associations to transfer votes to upper dimensions party candidates by focusing on the causal appointive impact of electing a mayor over subsequent statewide relative elections.
A good example of this is the office day national run in Virginia, where as quoted from Huffpost newspaper: “These victories provided an enormous boost to statewide candidates. In districts with highly competitive Delegate races in Virginia, Democratic vote turnout increased by 40 percent. That is a phenomenon that we refer to as “reverse coattails.” Essentially, it means that the folks running for state and local offices were responsible for increasing turnout for statewide candidates like Governor, Lieutenant Governor, and Attorney General. In all but one of our Virginia House races, our candidates performed better than Gov. McAuliffe did in 2013.”
Sources:
AMES, B. "The Reverse Coattails Effect: Local Party Organization in the 1989 Brazilian Presidential Election." American Political Science Review, v. 88, n. 1, p. 95-111, 1994
Ross Morales Rocketto. “Reverse Coattails’ Is A Real Thing. That’s why we need you to step up on National Run for Office Day. Updated Nov 14, 2017