House Republicans on Tuesday blocked a spending bill that would end a partial government shutdown until Feb. 1 because the measure does not meet President Trump's demand of funding a southern border wall.

Only six Republicans voted for the bill, despite Democratic optimism that they would see more GOP support to end the 25-day spending impasse by abandoning Trump's border wall demand and voting to reopen the government.

Democrats had introduced the measure until special rules that allow for a more immediate vote, but also require a two-thirds vote for passage. The final vote was 237-187, falling short of that threshold. More than 50 additional Republican votes were needed to approve the bill under those rules.

A small group of House Republicans have voted for various House spending bills to re-open the government without wall money, but Tuesday’s garnered only single-digit GOP support.

About a dozen Republicans voted for spending measures last week that did not include wall funding. Those measures passed under under different rules requiring only a simple majority, but will still remain stuck because Senate Republicans won't consider them.

The House Democratic leadership plans to put two more bills on the floor this week that would temporarily fund the government until Feb. 8 and Feb. 28.

Despite Tuesday's failure, Democrats believe the GOP wall of unity will eventually crack as the impact of the partial closures worsen. They plan to continue holding votes on spending bills without the wall funding that would bring Trump’s signature.

“We are going to continue to do our job," Rep. Hakeem Jeffries, D-N.Y., the Democratic Caucus Chair, told reporters Tuesday. “We hope the Republicans increasingly start to demand that the Republican leadership start to do their job as well."