<prompt> Translate the following text to EnglishIli kuondoa upendeleo wa kijamii na kiuchumi, Harris anatumia kile kinachojulikana kama sampuli ya kiwango, ambayo inahakikisha kuwa waulizwaji wa kura ni mwangaza sahihi wa idadi ya watu.  <response>: In order to overcome socioeconomic bias, Harris is using what is known as quota sampling, which ensures that the polls respondents are an accurate reflection of the populations demographics. 