A new Marquette Law School poll finds Kamala Harris leading Donald Trump nationally by six points among likely voters in a head-to-head match up, 53% to 47%.
In a multi-candidate field, Harris leads 50% to 42%
If other polls get similar margins, Trump is in big trouble


And national ones are irrelevant when the system is FPTP. Trump was president without a national advantage.
The electoral college is what makes national polls meaningless, not FPTP. If we picked presidents via national popular vote, national polls would be relevant, even if we still had FPTP.