Both parties are hypocrites in this regard on almost all issues. The “deeply held” talking points switch depending on context. For example, impeachment and supreme court confirmations. Trump’s next appointment (may it happen in 2020) will show both parties completely flipping their “deeply held” convictions from the Merrick Garland appointment by Obama.
The difference is, the media repeats D talking points as if they were serious and largely ignores R talking points and the media will endlessly point out the R hypocrisy and largely ignore the D hypocrisy.
Note the huge chorus of Media "crickets" about the 40 currently sitting House Democrats who voted all four "Nays" for Rapin Bill Clinton's impeachment...