Two Michigan Democrats are locked in a tight battle to earn the nomination in a crucial Senate seat that will be pivotal to the party's chances of retaking the upper chamber in November's midterms. The open Senate seat is almost a must-win for Democrats if they want to take control of Congress's upper chamber and try to thwart Trump's agenda. The seat is currently held by a retiring Democrat and the last time a Republican was elected to this Senate seat was in 1994. Two factions of the Democratic PartyBoth Stevens and El-Sayed have been laying out starkly different visions for Michigan and for the country. Michigan primary previews Trump's goal of federal election oversightAs polls opened on Tuesday, the justice department announced it was sending election monitors to four Michigan cities to supervise the vote.