Senator Ted Cruz’s plan to filibuster attempts to modify the House Continuing Resolution bill to include funding for Obamacare will not be supported by GOP Senate leaders. Without the support of fellow Republicans a filibuster would become impossible to sustain and the Democratic majority in the Senate will therefore be able to amend the House CR to include funding for Obamacare.

“Sen. McConnell supports the House Republicans’ bill and will not vote to block it, since it defunds Obamacare and funds the government without increasing spending by a penny. He will also vote against any amendment that attempts to add Obamacare funding back into the House Republicans’ bill,” said Don Stewart, a spokesman for the Republican senator.

Cruz’s plan already drew the ire of GOP leaders whose anger seemed to be based partly on not being consulted before the plan was announced publicly.The divisions in the GOP have spilled into the open as the establishment and Tea Party seem unable to work together on party strategy.

But if the modified CR does pass the Senate the real test for the GOP begins.

When Mr. Reid does send a budget back to the House, the question is what the GOP does then. If it passes another budget with the defund-ObamaCare provision, the Senate will refuse again, and we are headed toward a partial government shutdown. This won’t be the end of the world, but the politics are treacherous and unpredictable.

When Mr. Cruz demands that House Republicans “hold firm,” he means they should keep trying to defund ObamaCare even if it results in a shutdown that President Obama will blame on Republicans. It’s nice of him to volunteer House Republicans for duty. The supposedly intrepid General Cruz can view the battle from the comfort of HQ while the enlisted troops take any casualties.

Cruz said on Fox News that in the event of a standoff the House should simply pass funding department by department starting with the Department of Defense. Whether or not that strategy, or any strategy to defund Obamacare, will work is unknown. As things stand now, I guess we’ll find out.