What are we after: Following the design/data studio discussion (https://github.com/fecgov/fec-cms/issues/2636) we are moving forward with an MVP that involves improving the raising and spending bar charts, as well as adding a preview (of sorts) to the homepage.
We had intended on adding the election search to the homepage as well, and that work was completed here: https://github.com/fecgov/fec-cms/issues/2541. Now that work must be updated to include the bar charts.
Completion criteria:
Below is a first draft mock-up of the top 2020 presidential raising and spending candidates on the homepage. I opted to not remove functionality from the homepage for the election search, as I did not want to create any accessibility issues.
This version removes, as was previously determined to be an option, was to remove the three sections for the citizen resources.
I welcome any and all feedback. cc: @patphongs @johnnyporkchops @rfultz @AmyKort @PaulClark2

Based on feedback received from 8.1 demo, the design has been updated to include links to citizen's guide-type pages and reformats the functionality of the bar charts and includes filter interactions.

@AmyKort @dorothyyeager @kathycarothers @bmathesonFEC Need a content review on the language used for the bar charts header and explanatory text, as well as the toggle text.

For the boxes in pink above, the only suggestion I have is adding "top" before candidates in the sentence above the list of candidates. I don't feel strongly about that and overall it looks great.
I do have another thought though... I know you took the wording of those buttons linking to the citizens' pages from the titles of the three sections in the citizens' section. Looking at it anew, I think that "researching campaign finance data and the FEC" should maybe be changed to "learn more about using the FEC's campaign finance data." That tracks better for me what actually shows up when one goes to that page . Just a suggestion and I'll defer to @AmyKort and others on it.
@dorothyyeager Thanks! That sentence is just a duplicate of what's above it, but if you think it just needs a minor tweak that's fine by me! Happy to tweak the link text as well! No problem here!
@dorothyyeager Should all three of those links contain action words like "Learn". They're all formatted differently now. And we're good with using the word money in the toggle?
@JonellaCulmer Good thoughts. I agree, we should do action words. How about:
I'm fine with using "money" in the toggle - to me that's very clear - but will defer to other people who are more attuned to things data-wise in case I'm missing something. (Paging @bmathesonFEC @AmyKort @PaulClark2 )
@JonellaCulmer I'm ambivalent about the use of 'Money' on those buttons, it certainly works for me the way that it is now. My only question for you is about consistency, is there a reason you didn't stick with "Raising"/ "Spending" we use elsewhere on the site?
@bmathesonFEC I only chose to include money "raised" versus "spent" is because there's a little less context here on the homepage and I wanted to tell users what they were looking at. The numbers are what's being raised and spent, not raising and spending. And "Raising: by the numbers" and "Spending: by the numbers" work better as a summary for all the data we'll be able to see on those pages and not necessarily specific to the bar charts themselves. Plus they're too long for the toggles.
cc: @dorothyyeager @AmyKort
I'm okay with money in the toggle--it's short and makes sense to people. I worry that without context a toggle that asks what type of data and then offers "raising" or "spending" could be confusing, even though it's technically more accurate.
When you toggle to money spent, the label below changes to "how much has been spent by," correct?
We're repeating the same sentence under Compare candidates in elections and Top candidate financial rankings. Maybe this is an opportunity to add more information.
What if under Compare candidates in elections, we said something like: "Learn about candidates in a particular state or district, including how they raise and spend their funds." But something better than that.
What if we labeled the raising chart "How much are candidates raising and spending." Or "How much money are candidates raising and spending." Then we could use the space below to give instructions, something like "Learn how much individual candidates have raised and spent for Presidential, Senate and House elections."
@AmyKort For the one chart, I'm a little leery of saying "how" they raise and spend funds but I get what you're going for. Maybe "See funds raised and spent by candidates in a particular state or district."?
@JonellaCulmer mocked up another version (and made my ideas a lot better), so can you look again when she posts, @dorothyyeager , @kathycarothers @bmathesonFEC @PaulClark2
Please see updated mockup below. Includes changes to the language for the Compare candidates section, as well as the new bar charts section.

cc: @dorothyyeager @bmathesonFEC @kathycarothers @AmyKort @PaulClark2
Looks great, I really like this. Hopefully top 3 will stand the test of time.
I just remembered that Presidential candidate names will be "President / Vice President" once the full ticket is selected. In your example, "Trump, Donald J." will eventually be "Trump, Donald J. / Michael R. Pence". I'm point this out because Clinton's name is wrapped, so it could become a spacing issue in 2020.
My only nitpicky is that under GPO style, presidential is a lower case p unless it's a heading or starting a sentence (so lower case p in the sentence under "Who's raising and spending the most"). Otherwise, this looks and reads great!
Thanks everyone for your help bringing this final design to fruition. Here's the "final" version.

Closing this issue in favor of implementation issue: https://github.com/fecgov/fec-cms/issues/2562
Most helpful comment
My only nitpicky is that under GPO style, presidential is a lower case p unless it's a heading or starting a sentence (so lower case p in the sentence under "Who's raising and spending the most"). Otherwise, this looks and reads great!