beginning in april 1848, andrian was sent by the estates of lower austria to the vorparlament at frankfurt, where he was elected as one of the committee of fifty (fünfzigerausschuss) to direct the various states in electing members to the national assembly, and was director of the central committee for the elections. he was elected to the national assembly representing wiener neustadt from the first sitting on may 18, 1848, until march 30, 1849. he belonged to the numerically superior casino faction. he was elected vice president of the national assembly, and was also a member of the constitution committee and the central election committee. andrian was at the head of the deputation that interviewed the archduke john prior to his election as "reichsverweser" or regent of the provisional central power of the german empire.