Erfurt, GermanyAP —

Delegates at the national convention of the far-right Alternative for Germany party on Saturday overwhelmingly reelected its leaders, including Alice Weidel, as tens of thousands of protesters aimed to disrupt the meeting and some clashed with police.

Alternative for Germany, or AfD, sought to show unity as it voted to extend the terms of Weidel and Tino Chrupalla, who have headed it for four years as co-leaders and ran unopposed Saturday. Weidel was reelected with 81% of the vote, while Chrupalla earned 70%. German parties elect their leaders every two years.

The demonstrations outside the convention in the eastern city of Erfurt reflected how AfD has divided Germany even while becoming the biggest opposition party nationally and the strongest political force in Germany’s formerly communist east.

Saturday’s event was able to start on time despite the protests, which party officials hailed their “fundamental, legally guaranteed right to hold party conventions.”