While George W. Bush had a history of moderate, racially progressive politicians, Al Gore had a southern senator for a father who voted against the CRA.
This is an odd sentence, Linsanity.
Let me parse your words; "
While George W. Bush had a history of moderate, racially progressive politicians [sic]..." Did he? Perhaps he did have such a record whilst governor of Texas, but by the time he left the White House he had a fairly mixed reputation when it came to, say, his Justice Department's Civil Rights Division appointments (his appointees tasked with voter access springs to mind). But that's unimportant, because let's look at the the remainder of the sentence the above clause is meant to qualify; "...
Al Gore had a southern senator for a father who voted against the CRA."
What does the dead Al Gore, Sr., have to do with the policies of the living Al Gore, Jr., when compared to the also living George W. Bush?
Surely a better comparision would be to say that George Herbert Walker Bush ran for US senate in 1964 on a platform of opposing Civil Rights legislation, which is of a kind with what Senator Gore was practising on Capitol Hill at the time.
Though how you attribute to the respective sons these identically themed political acts is all up to you.
What if he voted against the voting rights act and/or signed the southern manifesto? How would that impact Al Gore and his politics, if at all?
I'm no expert on Gore Senior, but I note that his votes in 1964, against both cloture as well as the bill itself, were the result of him being in a tight reelection fight back home against a Goldwater Republican.
Of course those two votes don't endear him to history. He was wrong. Interestingly, a quick google shows that said votes have oftentimes been misrepresented by US conservative activists (usually circa 2000) to make the argument that, (a.) presidential candidate VP Algore had something to be ashamed of, as compared to Dubya (very debatable, see my reference to Bush Senior's own '64 campaign promise), and (b.) the Civil Rights Act must HAVE BEEN DONE BY REPUBLICANS!!111!!!!
Well, let's see: Dem senators, 46 yea for the Act, to 21 nay; GOPer's 27 for, 6 against. Let's call it a bust for both parties, 'cos I don't like the nitpicking craziness of arguing over percentages within party caucus rooms. Not when it's done in order to obscure the fact it was mostly Northern Democrats and LBJ who were the legislative CR vanguard
in the very first place.
Anyway, back on topic. For Gore to have voted against Voting Rights laws the bill would've had to have come to the floor in 1964, when he was under pressure from the Right electorally. I don't think that's likely, as LBJ wanted his own mandate first before he took up the renewed fight for Voting Rights enforcement laws.
The Southern Manifesto? That was a fifties thing, and it's something that a border state-ish politician like Gore was
not bound to, either way. In fact neither he nor the other Tennessee senator, Estes Kefauver, signed it. The Dem House delegation from their state were split on the issue. My understanding is that Democrats from the volunteer state who opposed the Manifesto did so because they wanted to show they were aligned with anti-machine politics.
Could he have signed it? Yes, he could have. But I think you first need to give him the pro-massive resistance tendencies of that era's Robert Byrd (and Byrd was from a state where open support for the strategy of white supremacy conferred little if any electoral advantage in local politics; that's not necessarily the case with Al Gore Senior. He may have benefitted from it.)
However, Al Gore Sr wasn't that kind of man at that time. He wasn't a saint on the issue, but he sure wasn't as extreme as Byrd chose to be.