Republicans continued to shatter turnout records in their presidential primaries and caucuses Tuesday, while Democrats lagged behind in what analysts said was a clear indication of an enthusiasm gap heading into the general election. Virginia easily broke its GOP record of 664,000 votes from 2000, and was nearing the 1 million mark. That would be four times the turnout in 2012’s Republican primary. But Democrats in the state were unlikely to touch their record set in 2008’s contentious primary. In Georgia, results were trickling in more slowly, but projections put the GOP there on pace to top the 900,000-vote record...