This took like 2 days to blow up. Wow. At any rate here's some points.

A. Harris isn't the one sending weapons. The VP in the US is largely powerless unless the President gives them something to do. Interestingly there's a possibility her remarks earlier this year were meant to put pressure on Biden. (the ones where she seemed almost to take the Palestinians side) But it could also have been stuff she was sent to say to try and calm tensions.

B. The polling data supports her messaging strategy. At this point she is clearly courting conservatives who don't like Trump. So her messaging strategy of, need a ceasefire/Israel has a right, is meant to not rock the boat.

This is why I call her a consensus candidate. I know that term gets used a lot to tar the democratic nominee the primary selects, but she is literally a consensus candidate. Blue dogs and moderates agreed to back her without a primary. She and her campaign team obviously believe she will lose more votes than she gains if she breaks that messaging line. The polling you supplied supports that younger and more left democrats want to see movement. But it doesn't support that swing state voters won't vote for her. The part that's worst is that in Pennsylvania the line dips precipitously on exactly what they feel they need. This is why the White House has weekly messaging on having a cease fire and why they always blame Hamas for it failing. That's the big thing people want.

For what it's worth I want to see that movement too. I just don't expect anything until after the election unless something big changes again. You'd think an American citizen being killed by a called shot while unarmed would do it but apparently not.

Edit to add, I forgot to add the reason PA is so important is up until a couple weeks ago it was the only state that mattered. Trump was seen as having sewn up enough other states that he only needed PA to win. So that has highly influenced the race. In a nutshell it doesn't matter what the uncommitted movement in the Rust Belt says because without PA they don't even get counted. Now of course the race has opened up but there's no telling if that's because of her strategy or if it was always going to open up.

I haven't checked the veracity of reports like this, but I've heard this and it makes me think her vagueness has got to do with $$$, not votes.

I don't care to go back and find all the transcripts but the way she's talked about it does make me think she's better than Biden. I don't think she's going to abandon Israel as an ally or anything but I do think she'll force the proper distribution of aid and put a stop to settlers in the West Bank and Gaza. Biden is on track to watch as the Israelis run over all of Palestine in the next few years.

If your talking about politicians then they certainly do. But their actions on something are generally colored by more than their own thoughts. Every successful politician masters the art of not giving answers that can only hurt them. One of the ways you can tell something has shifted is when they suddenly become very specific. Like when Biden was trying to drum up support after his debate. We suddenly got some really specific policy proposals.