Uncertainty is ubiquitous in elections, and candidates and parties often intentionally create uncertainty to benefit themselves. However, there is no consensus in existing research on how parties balance the trade-off between distinction and broad appeal without alienating their supporters. This paper proposes a novel theory that a party's brand structures when strategies that blur or obfuscate a party or candidate's position are effective. In particular, I argue voters respond negatively to appeals that signal brand deviation from co-partisans on issues that are central to their party's brand. Outside of the brand, the trade-offs between clarity and ambivalence will be weaker. I test these expectations in two survey experiments on a quota sample of the United States population. I find that the efficacy of blurred electoral varies by the brand centrality of an issue, the blurring strategy deployed, and the co- or out-partisan status of the receiver. These findings have implications for our understanding of how parties can navigate the costs and benefits of clear brands and blurred appeals in contemporary party competition.