The liberal battle for Senate District 3

<p>Five Democrats are competing in next week’s primary to be the new senator for the east side of Providence. What’s the difference between the candidates? What factors will affect who wins? And why should the rest of the state care? Globe columnist Dan McGowan helps us sort it all out. Tips and ideas? Email us at&nbsp;<a href="mailto:rinews@globe.com" rel="noopener noreferrer" target="_blank">rinews@globe.com</a>.</p><p>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.</p>