[1] On 17 December 2000, in the second round of the gubernatorial elections, Mashkovtsev won 46% of the votes defeating former vice governor of Kamchatka Oblast Boris Sinchenko (42%).

[2] In July 2005, the Kamchatka prosecutor's office terminated the criminal prosecution of the governor, reclassifying Mashkovtsev's actions from Articles 285 and 286 of the Criminal Code to Article 293 (negligence) and closing the case due to the expiration of the statute of limitations.

Mashkovtsev became the main initiator and executor of the project of unification of Kamchatka Oblast and Koryak Autonomous Okrug.

Most of the participants in the referendum spoke in favor of unification, and from the beginning of 2006, the implementation of transitional measures began in the regions.

In 2019, Mashkovtsev was nominated for Governor of Saint Petersburg from the Communists of Russia,[4] but was not allowed to run by the electoral authorities together with 18 other candidates.

[5] As the reasons, the election committee cited their failure to provide a number of documents necessary for registration, including 155 signatures of municipal deputies.