Evangelical christianity (the religious right, if you will) has no central leadership, but James Dobson is probably the most respected person among those with influence among that group. His purpose here is to point out that, while Obama is nominally a Christian, he is not any kind of Christian that evangelicals are used to voting for. Votes on abortion, gay rights and Obama's position (consistent with liberal Christianity) that the Jesus is only one path among many to get to heaven are highlighted. This of course is diametrically opposed to mainstream evangelical Christianity, so Dobson has his dander up pointing that out.
Impact on the race is likely minimal. No real surprises here.. My guess is that, at best, this will help McCain stem the bleeding of independent evangelical christians, who are concerned about social welfare, the environment, etc. from floating over to the Obama camp.

