bush will not appoint someone who will vote to overturn Roe V Wade.
“Why not?” you ask. Jack Balkin has this answer:

Bush must decide if he wants to overturn Roe or preserve the Republicans as the majority party. With Roe gone, the pro-choice movement will be energized and Republican politicians will have to state on the record whether they want to criminalize abortion. Women, libertarians, and moderates may bolt the party, destroying Bush’s winning coalition. Republicans may dislike Roe, but they may dislike losing elections even more.

On the other hand Balkin argues that the real plan is likely much more damaging to Roe supporters.