Senate, both by slim margins
Republicans are well positioned to win the majority in the Senate on Tuesday's election but Democrats cannot be counted out entirely. Democrats face a tough fight in US election to preserve their narrow 51-49 majority in the Senate. Polls suggest the two parties could switch control of each chamber, with Democrats winning back the House and Republicans retaking the Senate, according to the BBC.
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Montana: Democratic Sen. Jon Tester is the most vulnerable incumbent running for reelection. Tester's bid for re-election to a fourth six-year term in heavily Republican Montana will be one of the chamber's most competitive, according to a Reuters analysis of the three main nonpartisan U.S. election ratings services. He’s facing Republican businessman Tim Sheehy, a retired Navy SEAL and first-time candidate who has pulled ahead in the limited public polling of the race. Tester has served since 2007 in the Senate. The third-generation working farmer has never won a race with more than 51% of the vote.
Ohio: The race for Ohio was essentially a dead heat ahead of the election and widely considered to be one of the tightest of toss-ups races in the country. Incumbent Democratic Sen. Sherrod Brown,71, is facing Republican Bernie Moreno in this critical state. Brown is facing a competitive reelection campaign in a state where Trump has a great deal of support.