Believe it or not, in this informed day and age, people are still drinking and driving. If you are convicted of drinking and driving, it can be very hard to find affordable car insurance. The good news a good post-DUI driving record should help you get affordable rates in the long run.
After a DUI, you are considered a high-risk driver. If your insurance company doesn't cancel your policy altogether, and your current premium will likely go up. A DUI is a criminal offense and your driving record will be compromised by a criminal record.
Even though your options will be somewhat limited, you should shop around for better rates. It is still incumbent upon you to compare quotes to before you decide on a plan. Keep your record clean and become a safe, sober, and defensive driver.