(CNN) - In the latest sign Hillary Clinton isn't yet preparing to bow out of the presidential race, the New York senator is launching a new television ad Monday that highlights her claim she is beating Barack Obama in the popular vote.
The spot is set to run in the remaining two primary states - Montana and South Dakota - and argues Clinton has won “more votes than anyone in the history of the Democratic primaries.”
“Some say there isn’t a single reason for Hillary to be the Democratic nominee,” the ad's announcer states. “They’re right. There are over 17 million of them.”
Clinton echoed that argument in her Puerto Rican victory speech Sunday evening, declaring, "When the voting concludes on Tuesday…I will lead the popular vote."
"The decision [on who will be the nominee] will fall on the shoulders of those leaders in our party empowered by the rules to vote at the Democratic Convention," she also said.
Clinton's claim to winning the popular vote is debatable. Including the results from Clinton’s big win in Puerto Rico, she can only be considered the popular vote winner if the results from Michigan (where Obama was not on the ballot) are counted for her and Obama is awarded no votes from that state. But 237,762 voted "uncommitted" in that contest and the Obama campaign argues many of them were supporters of the Illinois senator.
In that scenario, Clinton holds a lead of 183,000 votes. But if Obama is awarded the uncommitted votes in Michigan, he comes out on top in the overall popular vote by 45,000 votes. Of all votes cast, that margin constitutes a difference of 0.1 percent.
Clinton can also be considered the popular vote leader if only the primary contests are included, and all caucus results are excluded. In that scenario, the New York Democrat is on top by more than 257,000 votes.
All scenarios don't include results from the non-binding primaries in Idaho and Nebraska.