Barack Obama level with Clinton in new Ohio tracking poll

Almost unbelievably, given her massive leads in the state just a few weeks ago, the latest poll from Ohio now shows Hillary Clinton's lead has evaporated and Barack Obama is dead level with her.

The results of the poll are shown below.

Reuters/C SPAN/Houston Chronicle/Zogby tracking poll Date: 2/27-29Ohio Added: 3/1/08 Est. MoE = 3.7%
Hillary Clinton
45%
Barack Obama
45%
Mike Gravel
1%
Unsure
6%
Other
3%

This is surely the end of the road for Clinton, isn't it ?