Gov. Kaine is expected to campaign in Virginia for Obama this weekend.

(CNN)—Virginia Governor Tim Kaine – rumored to be on Barack Obama’s shortlist – will spend the day Saturday campaigning for the presumed Democratic nominee.

Kaine told CNN last week he is not eyeing a spot on the Democratic ticket, but he did vow to help the Illinois senator win Virginia and its 13 electoral votes in November.

"I'm not running for anything,” Kaine said. “But my highest and best use is trying to be a good governor and trying to help Sen. Obama in Virginia, which as you know traditionally hasn't gotten a lot of attention in presidential years."

Obama swept the state’s February 12 primary with 63.7 percent of the vote. but the latest CNN electoral map finds Virginia is still a toss up between the Illinois senator and presumed Republican nominee John McCain. The state hasn’t voted for a Democrat since President Lyndon Johnson in 1964. McCain won his party’s Virginia primary with 50 percent of the vote.

CNN's Electoral Map: Who's ahead?

While Obama is in California taking part in a forum hosted by Pastor Rick Warren, Kaine is expected to make six stops in Virginia Saturday, starting in Winchester. He will continue to Leesburg, Manassas, Warrenton, Richmond and Henrico, where he will focus on Obama’s energy independence, employment and tax relief plans.

The two appeared together with in June when Obama campaigned in Virginia. According to the Washington Post, Kaine is also slated to speak on Tuesday night of the Democratic Convention in Denver.