George Allen (R) announced Tuesday that he had raised $1.1 million for his Senate campaign in the last three months of 2011, as he finished December with $2 million in the bank heading into a crucial election year.

Allen, the former governor and senator, is the frontrunner for the Republican nomination in the contest to succeed retiring Sen. James Webb (D). Ex-governor Timothy M. Kaine is the likely Democratic nominee, and the Allen-Kaine matchup is widely expected to be one of the most competitive — and expensive — Senate contests in the country.

Allen took in less in the fourth quarter of the year than he did in either the first of second quarters, though he did a bit better than he had in the third quarter. Allen spent a good deal of time in the run-up to November’s elections campaigning and raising money for state and local Virginia candidates rather than himself.

Based on his cash-on-hand total, Allen appears to have spent roughly 80 percent of the money he took in over the October-December period, as his campaign sought to build a statewide infrastructure and grow its fundraising lists.

Kaine, the former Democratic National Committee chairman, has not yet reported his fundraising totals for the last quarter of the year. He has consistently outraised Allen since entering the race.