Every Senator has a right — no a Constitutional duty to vote yes or no on the President's judicial nominees. In over 200 years this right has never been questioned. Democratic condemnation of nominees may seem logical to some, and may even have metit, but that is irrelevant and has no bearing on whether or not they derserve a vote.
Nothing else is pertinent. Anything in the nominee's past, be it judicial desicions, ideology, lifestyle, political leanings, or qualificantions. Don't like the nominee for whatever reason, or for no reason what so ever — vote against them, but to deny a vote is political bigotry.
If your neighbors prevented you from voting in an election because they don't like how they think you will vote would be a grave injustice, but that is exactly what is happening in the Senate with some Senators denying other Senators the right to vote.
The essence of bigotry is denying other people the same rights you have. For generations, it was racial bigotry which provoked filibusters to prevent the Senate from voting on bills to extend civil rights to blacks. But bigotry is bigotry, whether it is racial bigotry, religious bigotry or political bigotry.
People who say that the right of unlimited debate in the Senate "has served this country well" can seldom, if ever, point to any specific benefit that has come from any specific filibuster.
Liberal ideology that can seldom win at the ballot box anymore has turned to the only venue still open. The judicial system. For the most part ideology doesn't play a part in daily judicial decisions, but when the issues are of a political or dognmatic liberal nature liberals can win in the courts where they repeatedly failed at the ballot box.
This liberal political bigotry goes far beyond Washington, the Senate and even the courts to affect almost every part of our life.
Schools and colleges that bombard students with propaganda in favor of homosexuality often stifle any contrary views with rules against "hate speech" that prevent any criticism of either homosexuality itself or the policies advocated by gay activists.
Environmentalists who are against development think their views on this subject are a sufficient reason for unelected zoning boards and planning commissions to prevent other people from building homes or offices, even though there would not be any issue unless other people thought otherwise.
Indeed, the left in general has increasingly favored unelected institutions which impose their views, whether the federal courts, environmental agencies, or such national bureaucracies as the National Park Service or international agencies like the United Nations or the International Court of Justice at the Hague.
I've said it before, but it bears repeating. This less about Liberal vs Conservatism, but more about the their competing views of the Constitution. Most liberals look at the constitutiion as a "living document" that can be re-interpreted with time to fit the changing needs and ideology of society. The conservatives for the most part look at the Consitution as it was written, and the intent of the framers.
There is a way to change the Constitution or the meaning of it. It's called a Constitutional Amendment. Not nine unelected people in robes. If there is support for same-sex marriage, change the Consitution. You want all religious references stricken from public view, change the Constitution. You want judicial nominations with tougher advice and consent, change the Constitution.