The ads, paid for by Collins's supporters, highlight the mounting controversies Platner has faced through out his primary campaign.

While Democrats have made many arguments in defense of Platner, the case for excusing his behavior really boils down to three.

The ads, paid for by Collins's supporters, highlight the mounting controversies Platner has faced through out his primary campaign.

In a high-stakes Senate race in Maine, Democratic candidate Platner's historic primary win has Republicans worried. With a projected $384 million in spending, can grassroots…