So how does Trump win a second term? The answer may be that the Democrats nominate a very liberal candidate, something Democratic voters seem willing to do.
Further, Harris, Sanders and Warren are considerably further left of the 43 House Democrats who won seats from Republicans in 2018 — the candidates who gave the Democrats their House majority.
Nominating a very liberal candidate is a risky bet, though, especially given the polling so far. The well-known left candidates are doing worse than the more moderate one. Nominating one of them certainly strays from the playbook that Democrats used in the 2018 election to take back the House.