Should progressives shift their money and attention from the Connecticut Senate race to more important contests? Absolutely.
I'd like more of that advice going to, say, the people who gave money so that Hillary Clinton could have $22 million cash-on-hand. Does Bill Nelson need $12 million to run against Katie Harris? On the House side, does Marty Meehan, who won with 67% of the vote last time, really need to have 5 million bucks in the bank?
There is always an incredible misallocation of resources in elections and that's the money which flows to incumbents. Sure, they're not all safe and it's understandable that they need somewhat of a defensive warchest just in case, but if you want to criticize where donors are directing their money (and attention) start there.