Democrats feel tide turning their way in battle to flip US Senate

Just three months ago, centrist Democrats were panicking. After strong performances in Iowa, New Hampshire and Nevada, the Vermont senator Bernie Sanders appeared poised to sail away with the nomination for president. Some in the party feared the self-identified democratic socialist would wreak havoc down the ballot.
https://www.theguardian.com/us-news/2020/may/18/us-senate-democrats-elections-2020