Democrats are digging in against a short-term funding measure from Republicans and betting that the party in control of Washington will bear the brunt of the blame for a possible government shutdown.

But it’s a risky calculation, given Senate Democrats are using filibuster leverage to block a largely “clean” stopgap spending measure unless enhanced Obamacare subsidies set to expire are extended. It’s an annual scenario where one party invokes leverage over must-pass legislation, but only this time, the usual party roles are reversed.