Graham Platner is seeking to make a Democratic nomination for U.S. Senate official in advance of one of the most anticipated contests of the year.

Last weekend, his campaign wrestled with stories about sexually explicit messages that Platner sent to several women while he was married. Then on Thursday, The New York Times reported about his relationships with previous girlfriends. Some viewed him positively but others described him as volatile and insulting.

Graham Platner's wife called reports that her husband had previously exchanged sexually explicit text messages with several women "shameful" over the weekend, the latest controversy to hit the Maine Democrat's whirlwind campaign.