Some Democratic donors are grappling with the possibility that President Joe Biden could lose re-election following widespread intraparty concerns over his health and debate performance — and one consequence of that could be to turn their money toward House and Senate races. According to Axios, “deep-pocketed Democratic donors” told party leaders they plan to up their commitment to Senate candidates, particularly Rep. Ruben Gallego (D-AZ), who is running for Senate to replace independent Kyrsten Sinema. House candidates, too, are seeing a surge, with one Democratic lawmaker saying they’re havi…