The massive stimulus plan President Joe Biden signed last week sets up a critical real-world test of an argument that has divided political professionals for decades: Can Democrats win back White working-class voters drawn to conservative Republican messages on culture and race by offering them more tangible economic benefits?The massive stimulus plan President Joe Biden signed last week sets up a critical real-world test of an argument that has divided political professionals for decades: Can Democrats win back White working-class voters drawn to conservative Republican messages on culture and race by offering them more tangible economic benefits?