A number of recent works has shown how coalition signals and expectations on the likely post-election coalition-building behavior of parties can influence citizens voting behavior and, more specifically, foster strategic voting in multiparty PR systems. In this paper we build on this recent literature and present the results of two survey experiments run in the context of a regional level real election campaign in Spain. We use the experimental approach to assess to what extent the emission of coalition signals in either direction has the ability to influence party image, its perceived left-right placement, and voting intention both for old and new parties. Our design provides us with the ability to robustly test some recent theories on coalition-directed voting in an experimental framework embedded in a real campaign. Results show how coalition signals can influence the party image and vote intention, especially for new parties.