Well, time for more rambling.
First let me comment on the catholics and jews. As I am neither I can only make suppositions based solely upon my interactions with individuals from both groups. If I am wrong and offend please let me apologize up front as I have nothing but respect for both. I will also openly state my own preconceived biases based upon my own southern and Southern Baptist upraising. First on the catholics, as a southerner most catholics I have known are either recent imports from points north and as a southerner those folks "not from around here" are viewed as strange to begin with. I also have lots of experience with many southern catholics of both roman and orthodox persuasions as the Birmingham area was the recipient of many Slovakian and Silesian (Poland) emigrees to work the coal mines and stell industry, btw this is also why alot of those other catholics came down from the union I mean northern states. Next as a Southern Baptist the jewish people are held in very high regard and even though we had very little interaction the children of Israel are the chosen people and God's own. To go against them is to go against God Himself.
Again JMO but the catholics I know are all of a very decent sort and by and large are what I would consider to be of the same mindset as myself and conservative to very conservative in their personal and public lives. For that matter almost every one other than some real freaks that I have found in the big cities like Atlanta here when confronted with basic life decisions will respond as a conservative. The thing that I, from the outside, see in catholics is a group think mentality. Not that they are robots but from birth they are raised to accept that the teachings of the holy father and by extension the church itself as completely infallible. Not that this as a tenet of faith is a bad thing, I myself have but one infallibity that I adhere to and that is that the Holy Bible is the unadulterated truth of God and it under the guidance of the Holy Spirit that I am to read and understand it. Now for the reason catholics have tended to vote for the democratic party, I see it as a combination of two things. First and foremost both the priesthood and monastic orders, possibly save the jesuits, have been infiltrated by socialists, perverts and other neer do wells. The laity trained to take all direction from the church are pawns in the hands of liberals. Now I do see some hope in the current pontiff's appointment of more conservative cardinals here in the US plus the vatican has been forced to clean house of alot of the perverts and their allies. This is reason for hope as well as the rank and file catholic being more willing to not take everything at face value. Combine this with Obama's assault on conscience in the mandates in the healthcare bill and the resultant opposition from the church and the old lock on their votes may be broken. Even if only half of the voting catholics come over then that is one voting block neutralized.
Now for a group I know even less of personally the jewish voters. Again from the outside looking in. I see two types of jewish people. Those that remember the greatest tragedy of mankind's history, the pogroms up to and including the halocaust and mean it when they say NEVER AGAIN. These jews are Israelis and are over there fighting ever day for the right to live. The rest are american jews safe and comfortable behind the moat of oceans. This comfort has led to guilt which has led to massive charity campaigns, first to support the other kind of jew and second the rest of the suffering and depressed peoples of the world. Not that charity is a bad thing but it has led to the very thing that all leftist thinkers share, a self assured sense of superiority. Couple this with the known fact that the US was populated by jewish refugess from all parts of eastern europe to include portions of the former soviet union and many of these emigrees were and their descendants to this day are innoculated with the contagion of Marx. Now please do not take this as a blanket statement because it is not but speaks only to what I as an observer have seen of the portion of this population in places of importance. I speak more towards the Barbara Streisands than the Joe Greenbergs (he was the first jew I ever met in my small comunity when he bought the old Wallace's Barbecue joint, yes PORK barbecue is there any other).
Next I'll speak to the community I am far more familiar (literally) with and that is the black or african american community of the south. I am still to this day trying to puzzle out just how they went in less than a single generation from Selma and the schoolhouse door to full support of the party of George Wallace, so much so that the blacks of Alabama elected the little judge from Clio to his fourth term as Governor in 1983.