Might be easier to keep track of who everyone's gonna vote for this way. Feel free to list up to three of each rarity.

Favorite 2*: Strawberry, Bianca Clover, Cycla Menn
3*: Ipomoea, Marigold, Calystegia
4*: Canola, Di Yu, (three-way-tie between Hibiscus, Bianca Tulip, and Snowflake)
5*: Toad Lily, Lily Rubellum, Bipinna Cosmos
6*: Sakura, Mei

Top priority: Strawberry, any loli/pettanko/pink-haired girl. :P

Lower rarity girls will likely take priority for me, since I assume everyone else is going to vote 5-6*, annoyingly.

2*: Amaryllis, Bianca Clover, Margaret/Violetta Pansy
3*: Alstroe Maria, Phala Enopsis, Saffron Pansy
4*: Violetta Tulip, Saffron Tulip, Di Yu
5*: Convallaria (who I don't have ), Bipinna Cosmos (don't have either ), Orchid Wydler
6* (as far as I'm concerned these don't exist): Sakura, Cactace

Top priority is Amaryllis, but I'll be happy if any 2* girl wins. 3* would be okay too. They work hard for us getting sold for cash, wouldn't it be nice if one of them finally rose up to become a 5* champion?

2*: Mint
3*: Blue Lotus
4*: St. Paulia, Cepha Lanthera
5*: Bipinna Cosmos, Orchid Wydler

2* Mint
3* Comphrena Globosa
4* Saffron Tulip
5* Convallaria
6* Black Baccara

Most of my votes goes to Convallaria, because she is perfect. I may give some votes to Comphrena Globosa, her design and voice are also very pleasant.

2* Scarlet Sylvia
3* Blue Lotus, Ipomoea Nil
4* Violetta Tulip
5* Toad Lily, Lily Rubellum
6* Sakura

Currently tossing votes at Toad Lily, but also going to toss some towards Blue Lotus. Also secretly hoping Sakura hits 2nd or 3rd so her remake becomes a 5* and I might actually get her :P

4* Yulan
5* Orchid

Saving spot for more.

2*: Mint, Amaryllis
3*: Alstroe Maria, Marigold, Olive Arantiacus, Ipomoea Nil, Phala Enopsis
4*: Sweet Pea, St Paulia
5*: Toad Lily
6*:Cattleya

4*: Canola

Yes, that's all my votes are going to. I'll just vote for one girl and let the other 2 be decided by fate.

@MiqDoloran: I recommend not voting for Orchid, the devs have said we'll get the other brides eventually so why not turn more new girls into brides? :P

Top Priority Favorites for the Event:
3* Jasmine
4* Cepha

Strategically, do not vote for for Orchid, Cactace and Camelia. JP player have voted for them and we will receive them eventually as Tenhou point out.
I also recommend not voting for any 6*, since the first choice will be raised to 6*, with a new art.

For me, I will vote for 4* and lower girls.

4*: Cepha Lanthera, Hinoki Cypress
3*: Blue lotus, Serrata Rosalba, Alstroe Maria, Gomphrena Globosa, Jasmine, Rosa Novalis
2*: Scarlet Salvia, Bistorta