"The Republican party most closely matches the things I value and the beliefs I have," she said. "I'm pretty passionate about it."
Katherine Weaver, who also has diabetes, hasn't considered voting for Obama for even a minute.
"I'm born to be a Republican," she said.
Weaver, 52, knows it would be difficult if not impossible to buy insurance on her own because of her disease, but she said she's not worried because she has good insurance through her job as a public school teacher in Dallas, where she's worked for 20 years.
"It's very hard to get rid of teachers," she said. "I'm very protective of my job. I document everything I do."
A choice to make
Jill Thacker felt "weird" as she stood there in the 7-11 in Sanford, Florida, thinking about which cup to take.
She thought about her insurance, which covers her only if "I get hit by a bus." It's the only insurance she can afford given her preexisting condition.
She thought about how she's still paying off a $22,000 emergency room bill from last year.
She thought about her 25-year-old daughter, who's on her father's insurance only because of Obamacare.
But she also thought about how, in many fundamental ways, she just doesn't like Obama.
Then she reached for the blue cup with Obama's name on it.
"I really do feel conflicted," she said. "But for me, it's all about health care. It's my number one thing."