Primary and special election results across five states Tuesday raised concerns about the prospect of Republicans holding their House majority while setting the stage for some of the country's most important races for Senate and governor.
Voters in four states will cast ballots in pivotal midterm primary races, while an Ohio district will pick a new member of Congress in a surprisingly competitive special election.
Incumbents seeking re-election in Wisconsin, Michigan and Minnesota hold comfortable edges with a little more than three months before November's midterms, the NBC News/Marist polls found.
A plurality of voters in the key swing states of Michigan, Minnesota and Wisconsin said they would prefer to see Democrats take back control of Congress in the November election, according to a new poll.
Trump's decision to reconsider joining the TPP opens up another potential line of attack for some Democrats.
Democrats who face re-election in states Trump won in 2016 face pressure to support measures seen as bipartisan.
Azar would head the Health and Human Services Department, which oversees Medicare, Medicaid and Obamacare, as well as drug regulation.
Sen. Al Franken plans an announcement Thursday after new allegations and growing calls for his resignation.
Trump joked that he will get "unanimous support" from Democrats on the GOP tax proposal.
Doubts are growing that Republican senators can pass an Obamacare replacement on their own, and Democrats have seized on that.