The nation's most prominent pro-choice spokeswoman blasted Sen. Hillary Rodham Clinton for giving $10,000 to right-to-life Pennsylvania Democrat Bob Casey and accused the former first lady of "putting politics over principle." "When push comes to shove, at certain times, [Clinton] will support the party even if that choice does not reflect all their standards and principles," Kate Michelman, former longtime head of NARAL Pro-Choice America, told The Post. Clinton, a darling of the pro-choice community, is taking heat from the activist for giving the maximum donation allowable under law to pro-life Senate hopeful Casey through her political committee, HillPAC.