McCain
The
Martin Luther King Jr holiday
The Bush tax cuts
Roe v Wade
Campaign finance
Raising taxes to fix social security
Torture
The entire religious right
Ethanol
The estate tax
His comments about Hillary
etc. etc. etc.
Not to be disputatious, but I will, I don't think McCain has trimmed much on any of the above except the MLK Birthday, and the Bush tax cuts, and even on the latter he is consistent in the sense he was and is opposed to enacting them, but opposed once enacted to repealing them, since business needs consistency. It's disingenuous probably, and somewhat of a tortured construct, but consistent.
On the religious right thing, McCain just lost his temper at one point with Robertson and Falwell, because he blamed them wrongly for the black love child smear.