Sen. Jim Beall (D-San Jose)State senators upped the ante in negotiations over affordable housing Wednesday by approving a $3-billion bond designed to build and rehabilitate housing for low-income residents, the&nbsp;homeless and farmworkers.The measure from state Sen. Jim Beall (D-San Jose) would pay for new housing construction &mdash;&nbsp;specifically&nbsp;for development near transit and in high-density urban areas &mdash;&nbsp;and provide housing for farmworkers and mortgage assistance to address California&rsquo;s severe housing shortage.&ldquo;The state needs to take bold action to add to the housing stock,&rdquo; Beall said.Beall said he modeled the bond on one from a decade ago that created 92,000 units for low-income residents over time. For context, the state&rsquo;s independent Legislative Analyst&rsquo;s Office has estimated the state needs roughly 110,000 units beyond what&rsquo;s already planned each year&nbsp;for people at&nbsp;all income levels to keep pace with rising housing prices. But most experts believe that public housing subsidies are needed to ensure affordability for the state&rsquo;s poorest residents.The measure involves a tax increase to pay back the bonds, and still requires a two-thirds vote in the Assembly and the signature of Gov. Jerry Brown before it would appear on the crowded November ballot. Two Republican senators, Anthony Cannella of Ceres and Bob Huff of San Dimas, voted for the housing bond Wednesday, and the measure would also need GOP support in the Assembly.But even if the bond doesn&rsquo;t appear before voters, it adds another layer to the intense debate over affordable housing at the Capitol.Gov. Jerry Brown has rejected calls from legislators to spend money from the state&rsquo;s day-to-day operating budget on housing subsidies, saying they don&rsquo;t deliver enough bang for the buck. Instead, he&rsquo;s proposed legislation to streamline the approval process for affordable housing projects.Brown wants his bill to be passed as part of next year&rsquo;s budget, which faces a June 15 deadline. Democrats in the Legislature are pushing the governor to include more than $500 million in housing subsidies in the budget.