Sounds like they learned how King county WA is able to produce the necessary votes at the last minute when the numbers are close.
Just ask Dino Rossi - that was one of the more brazen examples I've personally witnessed
2016 Kentucky Primary
Hillary Clinton 212,550 46.8%
Bernie Sanders 210,626 46.3
Total votes cast 454,573 votes
Donald J. Trump 82,493 35.9%
Ted Cruz 72,503 31.6
Marco Rubio 37,579 16.4
John Kasich 33,134 14.4
Other 3,958 1.7
Total votes cast 229,667
2012 General Election
Mitt Romney 1,087,190 60.49%
Barack Obama 679,370 37.80%
2008 General Election
John McCain 1,048,462 57.37%
Barack Obama 751,985 41.15%
2004 General Election
George W. Bush 1,069,439 59.54%
John Kerry 712,733 39.6%
2000 General Election
George W. Bush 872,492 56.5%
Al Gore 638,898 41.4%
Total voter registration 5/20/2014
STATE TOTALS *
DEMOCRAT 1,672,664
REPUBLICAN 1,196,183
Other 236,499
Total Registered 3,105,349