It looks like you’ve got things specified twice:
<meta name="twitter:title" content="State Of The Swamp"/>
<meta name="twitter:url" content="http://stateoftheswamp.com"/>
<meta name="twitter:description" content="Donald Trump’s administration has thrown out longstanding ethical norms, put private interests before the public interest, and opened unprecedented opportunities for government officials to enrich themselves at taxpayer expense.You can help fight back by signing our petition to Congress and sharing"/>
<meta name="twitter:image" content="https://stateoftheswamp.com/wp-content/uploads/2017/04/stateoftheswamp-social-1.png"/>
<meta name="twitter:card" content="summary_large_image"/>
<meta name="twitter:site" content="@commoncause"/>
<meta name="twitter:image" content="/wp-content/uploads/2017/04/stateoftheswamp-social.png">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="@CommonCause">
<meta name="twitter:creator" content="@CommonCause">
<meta name="twitter:title" content="State Of The Swamp - Ethics In President Trump's First 100 Days">
Additionally, you need to provide a fully-qualified http/s URL in twitter:image (not a relative path as in the second instance of that tag).