Fuente: Ministerio del Interior
| 2011 | |||
|---|---|---|---|
| Partidos | Senadores | ||
| PP | 136 | ||
| PSOE | 48 | ||
| CiU | 9 | ||
| PSC-ICV-EUA | 7 | ||
| EAJ-PNV | 4 | ||
| AMAIUR | 3 | ||
| CC-NC-PNC | 1 | ||
| UCE | 0 | ||
| ESQUERRA | 0 | ||
| PIRATA | 0 | ||
| BNG | 0 | ||
| SAIN | 0 | ||
| EQUO | 0 | ||
| PFyV | 0 | ||
| ASRM | 0 | ||
| PxC | 0 | ||
| PCAS | 0 | ||
| DN | 0 | ||
| PACMA | 0 | ||
| CYD | 0 | ||
| LV-GV | 0 | ||
| PREPAL | 0 | ||
| COMPROMÍS-Q | 0 | ||
| URCL | 0 | ||
| I.FEM | 0 | ||
| PRC | 0 | ||
| Cex | 0 | ||
| UPL | 0 | ||
| GBAI | 0 | ||
| UCIT | 0 | ||
| FAC | 0 | ||
| P-LIB | 0 | ||
| CABALLAS | 0 | ||
| SXT | 0 | ||
| ESPAÑA 2000 | 0 | ||
| PH | 0 | ||
| BASTA YA | 0 | ||
| RPS | 0 | ||
| EB | 0 | ||
| PCPE | 0 | ||
| ANDECHA | 0 | ||
| DNE | 0 | ||
| PUM+J | 0 | ||
| ACIMA | 0 | ||
| PCAL | 0 | ||
| PSM-EN | 0 | ||
| DEC | 0 | ||
| PA | 0 | ||
| PRE-R | 0 | ||
| CXXI | 0 | ||
| UXV | 0 | ||
| IU-LV | 0 | ||
| PRDE | 0 | ||
| UPYD | 0 | ||
| HARTOS.ORG | 0 | ||
| PRAO | 0 | ||
| CDL | 0 | ||
| UNIDAD DEL PUEBLO | 0 | ||
| FE de las JONS | 0 | ||
| POSI | 0 | ||
| CCD | 0 | ||
| 2008 | 2004 | ||
|---|---|---|---|
| Partidos | Senadores | Partidos | Senadores |
| P.P. | 101 | PP | 102 |
| P.S.O.E. | 88 | PSOE | 81 |
| PSC(PSC-PSOE)-ERC-ICV-EUiA | 12 | PSC-ERC-ICV | 12 |
| CiU | 4 | EAJ-PNV | 6 |
| EAJ-PNV | 2 | CIU | 4 |
| CC-PNC | 1 | CC | 3 |
| I.U. | 0 | IU | 0 |
| B.N.G. | 0 | BNG | 0 |
| UPyD | 0 | PA | 0 |
| CA | 0 | EA | 0 |
| C's | 0 | CHA | 0 |
| NA-BAI | 0 | EV-AE | 0 |
| VERDES | 0 | NA-BAI | 0 |
| EA | 0 | BLOC-EV | 0 |
| PUM+J | 0 | PAR | 0 |
| PAR | 0 | CDS | 0 |
| PACMA | 0 | ARALAR-ZUTI | 0 |
| LV-GV | 0 | PH | 0 |
| CHA | 0 | PSM-EN,EU,E | 0 |
| BLOC-IDPV-EV-EE | 0 | PSA | 0 |
| aralar | 0 | AY | 0 |
| P.C.P.E. | 0 | LV-E | 0 |
| NC-CCN | 0 | CAC | 0 |
| EV-AE | 0 | PACMA | 0 |
| LVE | 0 | P.CANNABIS | 0 |
| UNITAT PER LES ILLES | 0 | POSI | 0 |
| RC | 0 | UPL | 0 |
| C.T.C. | 0 | PCPE | 0 |
| FE de las JONS | 0 | TC-PNC | 0 |
| PFyV | 0 | FE DE LAS J | 0 |
| PH | 0 | PFYV | 0 |
| E.V.-A.V. | 0 | CENB | 0 |
| P.S.D. | 0 | OTRADEM | 0 |
| P.O.S.I. | 0 | LVCM | 0 |
| ESQUERRA-PV | 0 | IR-PASOC | 0 |
| PdeAL | 0 | UM | 0 |
| D.N. | 0 | LVRM | 0 |
| P.C. | 0 | CTC | 0 |
| SAIn | 0 | DN | 0 |
| PDLPEA | 0 | ERPV | 0 |
| TC | 0 | LV-GV | 0 |
| AES | 0 | FA | 0 |
| UPL | 0 | EU | 0 |
| EV-LV | 0 | VERDES | 0 |
| NyR | 0 | CDN | 0 |
| IR | 0 | PADE | 0 |
| E-2000 | 0 | PAS | 0 |
| A.u.N. | 0 | L.I. (LIT-C | 0 |
| Ei | 0 | ESPAÑA 2000 | 0 |
| ABLA | 0 | FPG | 0 |
| EXTREMADURA UNIDA | 0 | PIL | 0 |
| PARTIDO RIOJANO | 0 | LV | 0 |
| FRENTE | 0 | I.DE.S. | 0 |
| CVa | 0 | AU.TO.NO.MO | 0 |
| C.D.L. | 0 | PC | 0 |
| A.M.D. | 0 | PREPAL | 0 |
| RCN-NOK | 0 | EI | 0 |
| LI-LITCI | 0 | PAE | 0 |
| O.N.V. | 0 | A | 0 |
| PNF (NO-FUMADORES) | 0 | PNC | 0 |
| PxCat | 0 | ADN | 0 |
| M.C.E. | 0 | AA | 0 |
| F.A. | 0 | FE | 0 |
| COMUNER@S | 0 | LG | 0 |
| ANC | 0 | EV-AV | 0 |
| AA | 0 | CI | 0 |
| PREPAL | 0 | UPSA | 0 |
| C.D.Es. | 0 | FEI | 0 |
| U.Ci.D | 0 | PTPRE | 0 |
| C.N. | 0 | N | 0 |
| ULEG | 0 | CNC | 0 |
| AY | 0 | AC25M | 0 |
| UNIDA | 0 | PKD | 0 |
| AGRUCI | 0 | PSICV | 0 |
| U.R.C.L. | 0 | APCA | 0 |
| LA REPUBLICA | 0 | IAS | 0 |
| CenB | 0 | PSM-EN | 0 |
| UNIDAD DEL PUEBLO | 0 | PRF | 0 |
| AXJ | 0 | CG | 0 |
| IRV | 0 | PNCA | 0 |
| pCUA | 0 | IRV | 0 |
| plRV | 0 | PMAR | 0 |
| PB-UB | 0 | PML | 0 |
| PSPC | 0 | A-IZ | 0 |
| I.M.C. | 0 | ZU | 0 |
| AVE | 0 | PAVIEL | 0 |
| CANTABRO | 0 | PROGRESSIST | 0 |
| A.I.D.G. | 0 | FI-LV | 0 |
| Ud. Ca. | 0 | ASI | 0 |
| TA | 0 | UD CA | 0 |
| CDAS | 0 | AUN | 0 |
| AC25M | 0 | UCL | 0 |
| PLCI | 0 | FN | 0 |
| PIIB | 0 | PSPC | 0 |
| P.R.GU. | 0 | CN | 0 |
| MUPC | 0 | LA REPUBLIC | 0 |
| PPCr | 0 | AXGC | 0 |
| IDEGA | 0 | PB | 0 |
| UCPIC | 0 | INDIO | 0 |
| PP.CC.AL | 0 | NT | 0 |
| F.D.E. | 0 | PPCR | 0 |
| ISAL | 0 | PRGU | 0 |
| TD | 0 | TD | 0 |
| CA.RE | 0 | UCM | 0 |
| I.C.Bur | 0 | GVE | 0 |
| CDS | 0 | INPA | 0 |
| ixC | 0 | VERDES | 0 |
| UCL | 0 | PNT | 0 |
| M.F.E. | 0 | UN | 0 |
| PJDE | 0 | CCSE | 0 |