AXIOS (Holly Otterbein) - The Democratic civil war is just getting started for Chuck Schumer
Chuck Schumer's headaches may only just be getting started after the Senate minority leader's handpicked candidate to take down Sen. Susan Collins was forced to drop out early in Maine's Democratic primary. Why it matters: Progressive candidates are mounting serious, well-funded campaigns against more traditional Democrats in Senate primaries across the country. - Moderate Democrats are worried that progressive candidates, especially those with baggage , will hurt their chances of flipping key Senate seats if nominated. - Progressives argue that party leaders are relying on an outdated, cookie-cutter formula to determine who is "electable." - After oyster farmer Graham Platner became the Democrats' presumptive Senate nominee in…