Keith, a lawyer who has worked for the Navy and in the corporate world, was unable to attract much fundraising for her 2016 run. Murphy went on to be the Democratic nominee for Senate and lose to Sen. Marco Rubio.
Although Mast won election by 9 points in 2016, Democrats are hopeful that 2018 will be a difficult year for Republicans. Keith pointed to Mast's vote on the Republican health bill as a particular weakness.
“When his constituents were begging to talk to him and tell him why the vote to repeal Obamacare was a horrible idea, he wasn’t even willing to listen to them,” she said.
Mast has attempted to position himself as a moderate, and one of few Republicans to take an interest in climate change, which is a particularly important issue in the coastal Florida district he represents. But he’s also faced angry constituents as a result of Donald Trump’s presidency and Mast’s support for the GOP health bill.