"Filibustering" is within the parliamentary or congressional "rules of conduct" leaving the State or the Country and voting "not present" are NOT!!!
To be precise, because you never are...
The filibuster is a TYPE of parliamentary procedure use by an individual to extend debate, allowing a lone member to delay or entirely prevent a vote on a given proposal. It is a form of obstruction in a legislature or other decision-making body. It says nothing about it happening within the walls of our Congress or how it is implemented. That part you pulled out of your nether region just to talk nonsense.
In Wisconsin, to pass any legislative measure concerning the budget a certain number of Senators must be present in order for a vote to happen. The voluntary absence of the 14 Democratic Senators brought the grand total of present Senators below that necessary number. This represented their form of the filibuster and forced the remaining Republican Senators and Scott Walker to negotiate if they wanted to pass the financial legislation they proposed that included the repeal of collective bargaining. Alas, since all of these moves by Walker weren't about the economy to begin with they found a loophole to try and pass a piece of legislation that wasn't "budget specific" and focused on the one part that Democrats wanted to maintain even after they agreed to negotiate on everything else.
Most people realize that you're not for those who lean towards the left. However, It would really help your arguments if you knew what the heck you were talking about, BF2K. But constantly, you demonstrate that you don't... you really, REALLY don't.