Top Dem’s past push for noncitizen voting rights revealed ahead of House vote

The top Democrat you're referring to is Representative John B. Larson from Connecticut. He introduced a bill, the New Columbia Admission Act, in 2015 which would have made Washington D.C. the 51st state and extended voting rights to the citizens residing there. The bill didn't explicitly mention non-citizens but because D.C. locally allows non-citizens to vote in municipal elections, this caused some to interpret the proposal as advocating for non-citizen voting rights. At the time, the bill didn't pass. However, the question of statehood and voting rights for D.C. has remained a pertinent topic. As for the House vote you mentioned, it's likely in relation to H.R. 51, the Washington, D.C. Admission Act, which aims to make D.C. a state. Please note that news and legislations change frequently, and this information might require updating depending on the current political climate.