Complex sentence: The Progressive Change Campaign Committee (PCCC) is a U.S. political action committee which focuses on electing progressive Democrats to the Senate and House of Representatives and is an advocate for progressive policy responses to national and local political issues.
Split into simpler sentences: The Progressive Change Campaign Committee (PCCC) is a U.S. political action committee which focuses on building progressive power. This includes electing progressive Democrats to the Senate and House of Representatives and advocating for progressive policy responses to national and local political issues.