Voters in nearby West Virginia go to the polls in just a few hours and the Kentucky primary is just one week away.
Hillary Clinton is hoping for big wins in both states to keep her presidential bid alive.
Her opponent, Barack Obama, made his first stop in the Bluegrass this year in Louisville.
This was Senator Barack Obama's first stop in Kentucky since August.
A recent poll shows Obama trailing Senator Hillary Clinton by double digits and even people in his own campaign believe his chances of winning are slim in Kentucky and West Virginia.
Thousands of people cheered in Louisville welcoming Senator Barack Obama to the commonwealth, where he promised to improve healthcare and end the war in Iraq.
Obama says a change in the White House is what the county needs.
Obama's opponent, Senator Hillary Clinton, has spent more time in the bluegrass state recently.
Her daughter Chelsea was in Kentucky Monday supporting her mother's campaign in Ashland and other towns.
Chelsea Clinton says her mother will also bring better healthcare and more jobs to Americans.
Though Obama and Clinton disagree on some issues, Obama says it's nothing compared to the differences with the presumed republican nominee John McCain.
No other campaign stops are scheduled in Kentucky right now for Clinton or Obama before the primary... which is one week from Tuesday.
Kentucky's Superdelegates are split on the race.
One of them, Governor Steve Beshear, hasn't endorsed anyone yet.
Lt. Governor Daniel Mongiardo, who's not a Superdelegate, endorsed Obama over the weekend.