A recent Vox article, focusing on the Biden Administration's attempts to convince Republican governors and legislators to expand Medicaid in states that have not yet done so, also contains polling data on Medicaid Expansion from eight states (out of the 12 total) not currently participating (link). At least a plurality, if not an outright majority, supports expansion in all of these states. These states (with their support levels, ordered from greatest to least) are Kansas (55%), Georgia (55%), North Carolina (53%), Florida (52%), Texas (52%), Wisconsin (52%), South Carolina (50%), and Alabama (45%). Note that sizable proportions of respondents (17-23%) are undecided in each state, so opposition in the states (23-37%) is well below support.