Private GOP polling that points to a bleak midterm landscape and a Senate firewall under strain has set off alarms inside the party, Axios reports.

Add Yahoo as a preferred source to see more of our stories on Google. Alexander Vindman, the one-time National Security Council (NSC) aide whose testimony before Congress fueled the first impeachment of President Donald Trump, on Tuesday announced he's launching a Democratic Senate campaign in Trump's adopted home state of Florida.