随着美国临近一场可能影响深远的中期选举，政治版图似乎正在发生变化。
With the US approaching a potentially consequential midterm election, the political landscape appears to be shifting.
Alison Sargent 欢迎伦敦玛丽女王大学美国政治与政策高级讲师 Richard Johnson 博士，由他分析民主党取得压倒性胜利的前景。
Alison Sargent is pleased to welcome Dr Richard Johnson, Senior Lecturer in US Politics & Policy at Queen Mary University of London, who examines the prospect of a sweeping Democratic victory.
他认为，民主党有望实现自巴拉克·奥巴马 2008 年历史性当选总统以来规模最大的选举收获。
He argues that the party could achieve gains of a magnitude not seen since Barack Obama's historic presidential election in 2008.
Johnson 看到民主党支持者热情高涨，且在独立选民、受过大学教育的白人选民和拉美裔选民中支持率上升，同时也出现了唐纳德·特朗普那支极其忠诚的选举联盟出现倒戈迹象。
Johnson sees a combination of Democratic enthusiasm, and growing support among independents, white college-educated voters and Latinos, and signs of defections from Donald Trump's fiercely loyal electoral coalition.