A political polling firm surveyed 850 randomly selected likely voters about their preference in a mayoral election. The results are shown in the table below.
| Candidate/Status | Frequency |
|---|---|
| Candidate A | 325 |
| Candidate B | 290 |
| Candidate C | 145 |
| Undecided | 90 |
If the total number of likely voters in the city is estimated to be 450,000, based on the sample data, what is the best estimate, in thousands, of the difference between the number of likely voters who favor Candidate A and the number of likely voters who are undecided? (Round your answer to the nearest whole number of thousands.)
