Thriving longterm channel relationships require trust. Previous empirical work and metaanalysis have emphasized the central role of trust but its potential as a mediator of power has not been tested empirically. A model is proposed that hypothesizes a central, mediating effect for trust between power constructs (power asymmetry, coercive and noncoercive application of power) and key behavioral and attitudinal relationship outcomes (conflict, cooperation and satisfaction). The model is tested on a large sample (N = 887) in a single channel where there is a variable, but generally asymmetric, power relationship between principal and agent, as exists in many franchise and agency channels. Trust was not affected directly by the level of power asymmetry, but rather the way power was used, either coercively or noncoercively raised or lowered trust. Trust was found to mediate the impact of the way power is used on the agent's perception of cooperation, satisfaction, and conflict, emphasizing the pivotal role of trust in understanding the behavioral aspects of channel behavior.