| m. Sierpc, Precinct no. 1 |
| Vote on 05-12-2010 | |
| Office | Burmistrz Miasta Sierpc |
| Precinct | Precinct no. 1 |
| Electoral Commission Regional Headquarters | Była klubokawiarnia "Strefa",ul.Królewska 8d,Sierpc |
| Number of electors | 1 360 |
| Number of dispensed ballot cards | 518 |
| Number of valid ballot cards | 517 |
| Number of votes valid | 507 |
| Number of votes invalid | 10 |
| Number of dispensed ballot cards for plenipotentiaries | 0 |
| Protocol date | 05-12-2010 22:31 |
| No. | Family name and given names | Age | Education | Address, party membership and endorsements | Number of votes | Votes % | |
| 1 | Kośmider Marek Andrzej | 60 | wyższe | Sierpc, submitted by KOMITET WYBORCZY WYBORCÓW ZGODA W SAMORZĄDZIE, not a member of any political party | 288 | 56,80% | |
| 4 | Żmijewski Jarosław | 41 | wyższe | Sierpc, submitted by KOMITET WYBORCZY WYBORCÓW "AKTYWNE CENTRUM", not a member of any political party | 219 | 43,20% | |
| Vote on 21-11-2010 | |
| Office | Burmistrz Miasta Sierpc |
| Precinct | Precinct no. 1 |
| Electoral Commission Regional Headquarters | Była klubokawiarnia "Strefa",ul.Królewska 8d,Sierpc |
| Number of electors | 1 360 |
| Number of dispensed ballot cards | 703 |
| Number of valid ballot cards | 702 |
| Number of votes valid | 681 |
| Number of votes invalid | 21 |
| Number of dispensed ballot cards for plenipotentiaries | 0 |
| Protocol date | 22-11-2010 01:09 |
| No. | Family name and given names | Age | Education | Address, party membership and endorsements | Number of votes | Votes % | |
| 1 | Kośmider Marek Andrzej | 60 | wyższe | Sierpc, submitted by KOMITET WYBORCZY WYBORCÓW ZGODA W SAMORZĄDZIE, not a member of any political party | 246 | 36,12% | |
| 2 | Leśniewski Piotr | 40 | wyższe | Borkowo Kościelne, submitted by KOMITET WYBORCZY WYBORCÓW NIEZALEŻNI I PRAWORZĄDNI, not a member of any political party | 136 | 19,97% | |
| 3 | Zimerman Margota Anna | 38 | wyższe | Sierpc, submitted by KOMITET WYBORCZY WYBORCÓW KOMITET OBYWATELSKI SIERPCZANIE 2010, not a member of any political party | 120 | 17,62% | |
| 4 | Żmijewski Jarosław | 41 | wyższe | Sierpc, submitted by KOMITET WYBORCZY WYBORCÓW "AKTYWNE CENTRUM", not a member of any political party | 179 | 26,28% | |