President Donald Trump's longtime pollster Tony Fabrizio is advising Republican candidates to change how they talk about artificial intelligence data centers, warning that "unconditional support" for rapid expansion could create political challenges as voters raise concerns about electricity costs, water use and the impact on local communities.In a two-page messaging memo obtained by Axios, Fabrizio provides Republican candidates with a strategy for responding to criticism over AI infrastructure projects. The guidance is aimed at helping candidates move from defending data centers to setting conditions for their approval as the debate over artificial intelligence investment expands across the country and opposition…