Gov shutdowns only help with GOP fundraising.
The Democrats ALWAYS blink first on these negotiations. They have to. If you take away trial lawyers, immigrants form more socialist Nations, public sector unions, and everyone else directly bribed by the Democratic Party, you don't have a functioning party anymore. The vast majority of the democratic party's voting base relies on government largesse in one form or another. This is why the Democrats always concede government shutdown negotiations. The Democratic base needs the flow of government money to be steady and forever increasing. Any Interruption of government largesse could be catastrophic for them.
The last government shutdown resulted in huge majorities for the Republican Party. The Republican base believes in smaller government. The voting base, and the donor class sees this as a net positive. It proves the idea that we really don't need all of the government that we currently have.