CHARLOTTE, N.C. -- Virginia Senate candidate Tim Kaine will address the Democratic National Convention Tuesday night, fully embracing President Obama's policies even as other down-ballot Democrats facing tough elections this November are keeping their distance from the president.

Kaine is expected to speak between 6:30 p.m. and 7:30 p.m., according to DNC organizers.

As a former Virginia governor who was among the first to endorse Obama four years ago and who served as Obama's Democratic National Committee chairman, Kaine's close ties to the president have become an issue in one of the most closely watched Senate races in the country. Kaine's Republican rival, George Allen, has been telling voters that a vote for Kaine is a vote for a continuation of Obama's failed economic policies.

Allen didn't speak at the GOP convention in Tampa last week, choosing instead to hit the campaign trail in a race that polls consistently show is a dead heat.

While Kaine is attending, a number of other Democrats are skipping the convention, including those facing tough races in Pennsylvania, Montana and West Virginia.

Kaine will speak after Illinois Gov. Pat Quinn and Cincinnati firefighter Doug Stern. Charlotte Mayor Anthony Foxx and Senate Majority Leader Harry Reid, D-Nev., will follow Kaine.