SEN 21 | |
|---|---|
| Leader | Václav Láska |
| Founder | Václav Láska |
| Founded | 19 December 2017 |
| Split from | Green Party |
| Youth wing | Young Dreamers |
| Ideology | Liberalism Pro-Europeanism |
| Political position | Syncretic |
| European affiliation | European Democratic Party |
| Colours | Blue and red (SEN 21) Teal and maroon (Senator 21) |
| Chamber of Deputies | 0 / 200 |
| Senate | 3 / 81 |
| European Parliament | 0 / 21 |
| Website | |
| senprocesko.cz | |
SEN 21, formerly Senator 21 (Czech: Senátor 21), is a Czech political movement established in 2017 by Senator Václav Láska after leaving the Green Party. The party's candidate Tomáš Goláň won the 2018 Zlín by-election.
The party joined the European Democratic Party in February 2019.
In October 2023 Senator 21 and Volt Czechia announced that they would be standing in the 2024 European elections with a joint list.

| Year | First round | Second round | Seat totals | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Votes | % | Seats | Votes | % | Seats | Won | Not up | Total | |
| 2018 (Zlín) | 3,234 | 18.99 | 0 / 1 | 5,991 | 53.78 | 1 / 1 | 1 / 1 | 4 / 80 | 5 / 81 |
| 2018 | 33,860 | 3.11 | 0 / 27 | 24,250 | 5.80 | 1 / 27 | 1 / 27 | 5 / 54 | 6 / 81 |
| 2020 (Teplice) | 3,475 | 22.15 | 0 / 1 | 3,972 | 42.83 | 0 / 1 | 0 / 1 | 6 / 80 | 6 / 81 |
| 2020 | 32,884 | 3.30 | 0 / 27 | 25,071 | 5.55 | 2 / 27 | 2 / 27 | 1 / 54 | 3 / 81 |
| 2022 | 27,672 | 2.49 | 0 / 27 | 21,051 | 4.39 | 1 / 27 | 1 / 27 | 3 / 54 | 4 / 81 |
| 2024 | 13,068 | 1.65 | 0 / 27 | 6,862 | 1.76 | 1 / 27 | 1 / 27 | 3 / 54 | 4 / 81 |
| 2026 | 21,379 | 1.85 | 0 / 27 | 12,205 | 2.58 | 1 / 27 | 1 / 27 | 2 / 54 | 3 / 81 |
| Election | Votes | % | Seats | +/– |
|---|---|---|---|---|
| 2026 | 691,248 | 0.62 | 29 / 62,178 |
| Election | List leader | Votes | % | Seats | +/− | EP Group |
|---|---|---|---|---|---|---|
| 2024 | Lenka Helena Koenigsmark | 9,955 | 0.34 (#15) | 0 / 21 |
New | − |