In the past two months, the Harris-Walz campaign has texted five times asking me to join its door-knocking efforts in Virginia. I am a young woman living in Northern Virginia, so I am statistically likely to be a Democrat. But a data file of reasonable quality would also tell you that I have voted in every Republican primary since 2012, that I am a weekly Mass-attending Catholic and that I am married: three signs that I am probably not going to spend my weekend pounding the pavement for Kamala.