The TV spot — airing in Baltimore and Salisbury — is emblematic of a U.S. House race that is flipping the usual Maryland script. Democratic voters outnumber Republicans 2-1 in the state, but it’s a different world in the 1st District, which is made up of parts of the counties of Baltimore, Carroll and Harford, as well as the Eastern Shore. The district gave Republican President Donald Trump 64 percent of the vote in 2016 and re-elected Andy Harris, the GOP congressman, with 67 percent.