Ridiculous.
It is nothing more than their mantra. They are reduced to propaganda to keep their hopes up. The Kavanaugh fiasco and violent behavior is the last straw with many.
There's enough red voter motivation to keep house districts in red states like NC so the house will be very close.
The Senate: because the dems are defending 26 or so seats and the republicans are defending 9. Ten of those dem seats are in red states. So the math is with the republicans. The opposite situation occurs in 2020, so the repubs need to win big in 2018 to protect against losses in 2020.
The House: There has been almost 50 republican retirements resulting in open seats, which is a record. We all know it is harder to defend an open seat for various reasons. Penn was ordered to redo their congressional districts which will result in 3 republican losses. There is district 10 in Virginia, which Comstock will lose probably bigly. There are two indicted republican congressmen, one in NY and one in Cali, with polls showing narrow margins for the republicans, but the dems are focusing on these two districts and all bets are off. Repubs can lose only 23 seats, so with the three Penn losses and Comstock, the party is down to 19 seats and 17 seats if the indicted congressmen lose. There are about 40 competitive districts this election and only three are controlled by the dems. Some republican super pacs and other campaign committees have already pulled out of some of these races and have given up on some races already. Historically, the party with the White House loses seats in the midterms. Only twice that did not happen since WW2. So, it will be difficult, but hopefully we will keep the House.
There's nothing democratic about the Democrat party.