Opinion polls provide useful information to politicians.  They provide important information about what people think of their performance during the election process. Politicians have the right to change tactics if need be and opinion polls often provide voter feedback about how a candidate is perceived. Informed candidates can better speak to voter concerns, thus increasing dialogue prior to elections. Candidates who speak more specifically to issues develop a better public trust as well as commitment regarding their future performance to which they can be held accountable. Since candidates or platforms which win the election influence future policies, citizens benefit from informed politicians who can speak to the concerns of citizens and issues of the nation.